Arithmeticeasy · Past Paper
The ratio of zinc and copper in brass is 13:7. How much zinc is there in 100 kg of brass?
A65 kg
B35 kg
C70 kg
D13 kg
✓ Correct Answer: A — 65 kg
Total parts = 13 + 7 = 20. Zinc = (13/20) * 100 = 65 kg.
Share this question
More from Arithmetic
- In the formula A = P(1 + R/100)^T, what does 'A' represent?
- If $(x+y) : (x-y) = 4:1$, then $(x^2+y^2) : (x^2-y^2)$ is:
- Express 7/20 as a percentage.
- The simple interest on a certain sum of money for 2.5 years at 12% p.a. is Rs 40 less than the simple interest on the same sum for 3.5 years at 10% p.a. Find the sum.
- The ratio of copper and zinc in an alloy is 5:3. If the weight of copper is 18.5 g, find the weight of zinc.