An alloy is made up of metals P,Q,R, mixed in the ratio 4:1: 5: A blacksmith wants to make 800g of the alloy. He can only...

An alloy is made up of metals P,Q,R, mixed in the ratio 4:1: 5: A blacksmith wants to make 800g of the
alloy. He can only get metal P from a metallic ore which contains 20% of it. How many Kgs of the ore
does he need.

Answers

Kavungya answered the question on March 27, 2019 at 13:25

Next: A line perpendicular to y = 3-4x passes through (5,2) and intercepts y axis at (0,k) Find the value of K.
Previous: The structure of water molecules can be represented as shown below.

View More Mathematics Questions and Answers | Return to Questions Index

Exams With Marking Schemes

Related Questions

A line perpendicular to y = 3-4x passes through (5,2) and intercepts y axis at (0,k) Find the value of K.(Solved)
A line perpendicular to y = 3-4x passes through (5,2) and intercepts y axis at (0,k)
Find the value of K.

Date posted: March 27, 2019. Answers (1)
In the given figure CD is parallel to BAC, calculate the values of x and y.(Solved)
In the given figure CD is parallel to BAC, calculate the values of x and y.

Date posted: March 27, 2019. Answers (1)
Evaluate using logarithms(Solved)
Evaluate using logarithms

Date posted: March 27, 2019. Answers (1)
If one litre of water has a mass of 1000g, calculate the mass of water that can be held in a rectangular tank measuring 2m...(Solved)
If one litre of water has a mass of 1000g, calculate the mass of water that can be held in a rectangular tank measuring 2m by 3m by 1.5m. (give your answer in tonnes).

Date posted: March 27, 2019. Answers (1)

A frustrum of height 10cm is cut off from a cone of height 30cm. If the volume of the cone before cutting is 270cm³ ,...(Solved)
A frustrum of height 10cm is cut off from a cone of height 30cm. If the volume of the cone before cutting is 270cm³ , find the volume of the frustrum.

Date posted: March 27, 2019. Answers (1)
The last of three consecutive odd numbers is (2x+3). If their sum is 105, find the value of x.(Solved)
The last of three consecutive odd numbers is (2x+3). If their sum is 105, find the value of x.

Date posted: March 27, 2019. Answers (1)
An Indian on landing at Wilson Airport changes Re 6000 into Kenya shillings when the exchange rate is Re = Ksh. 1.25. He spent Ksh....(Solved)
An Indian on landing at Wilson Airport changes Re 6000 into Kenya shillings when the exchange rate is Re = Ksh. 1.25. He spent Ksh. 5000 when in Kenya and converted the remaining amount to Rupees at the same rate as before. Find out how much the Indian is left with in Rupees.

Date posted: March 27, 2019. Answers (1)
How many multiples of 3 are there between 28 and 300 inclusive?(Solved)
How many multiples of 3 are there between 28 and 300 inclusive?

Date posted: March 27, 2019. Answers (1)

Point P divides line MK in the ratio 4:5. Find the co-ordinates of point P if K is point (-6,10) and M is point (3,-8)(Solved)
Point P divides line MK in the ratio 4:5. Find the co-ordinates of point P if K is point (-6,10) and M is
point (3,-8)

Date posted: March 27, 2019. Answers (1)
Using the trapezium rule, estimate the area bounded by the curve y = x², the x – axis and the co-ordinates x = 2 and...(Solved)
Using the trapezium rule, estimate the area bounded by the curve y = x², the x – axis and the co-ordinates x = 2 and x = 5 using six strips.

Date posted: March 27, 2019. Answers (1)
The value of a machine is shs. 415,000. The machine depreciates at a rate of 15% p.a. Find how many years it will take for...(Solved)
The value of a machine is shs. 415,000. The machine depreciates at a rate of 15% p.a. Find how many years it will take for the value of the machine to be half of the original value.

Date posted: March 27, 2019. Answers (1)
The gradient function of a curve that passes through point: (-1, -1) is 2x + 3. Find the equation of the curve.(Solved)
The gradient function of a curve that passes through point: (-1, -1) is 2x + 3.
Find the equation of the curve.

Date posted: March 27, 2019. Answers (1)
Use tables to evaluate(Solved)
Use tables to evaluate

Date posted: March 27, 2019. Answers (1)
Two matatus on a dual carriageway are moving towards a bus stop and are on level 5 km from the stop. One is travelling 20...(Solved)
Two matatus on a dual carriageway are moving towards a bus stop and are on level 5 km from the stop. One is travelling 20 km/hr faster than the other, and arrives 30 seconds earlier. Calculate their speeds.

Date posted: March 27, 2019. Answers (1)
Two points A and B are 1000m apart on level ground, a fixed distance from the foot of a hill. If the angles of elevation...(Solved)
Two points A and B are 1000m apart on level ground, a fixed distance from the foot of a hill. If the angles of elevation of the hill top from A and B are 60^o and 30^o respectively, find the height of the hill.

Date posted: March 27, 2019. Answers (1)
Use the table reciprocals to evaluate to 3 s.f. 1/7 + 3/12 + 7/0.103(Solved)
Use the table reciprocals to evaluate to 3 s.f.
1/7 + 3/12 + 7/0.103

Date posted: March 27, 2019. Answers (1)
Three points are such that A (4 , 8), B(8,7), C (16, 5). Show that the three points are collinear.(Solved)
Three points are such that A (4 , 8), B(8,7), C (16, 5). Show that the three points are collinear.

Date posted: March 27, 2019. Answers (1)
Rationalise the denominator in(Solved)
Rationalise the denominator in

Date posted: March 27, 2019. Answers (1)
Expand (x + y)⁶ hence evaluate (1.02)⁶ to 3d.p.(Solved)
Expand (x + y)⁶ hence evaluate (1.02)⁶ to 3d.p.

Date posted: March 27, 2019. Answers (1)
A man is employed at a KShs. 4000 salary and a 10% annual increment. Find the total amount of money received in the first five...(Solved)
A man is employed at a KShs. 4000 salary and a 10% annual increment. Find the total amount of money received in the first five years

Date posted: March 27, 2019. Answers (1)

Quick Links