Arithmeticmedium · Past Paper
If 20% of (A + B) = 50% of (A - B), then find the ratio of A to B.
A3:7
B7:3
C5:2
D2:5
✓ Correct Answer: B — 7:3
0.2(A+B) = 0.5(A-B) => 2A+2B = 5A-5B => 7B = 3A => A/B = 7/3.
Share this question
More from Arithmetic
- The ratio of two numbers is 3:7. If the larger number is 63, what is the smaller number?
- A manufacturer sells to a wholesaler at 25% profit, wholesaler to retailer at 20% profit, and retailer to customer at 28% profit. If customer pays Rs. 9600, find manufacturer CP.
- If $x:y = 2:1$, then $(x^2-y^2) : (x^2+y^2)$ is:
- Subtract 10% of 200 from 200.
- A, B, C together earn Rs 150 per day while A and C earn Rs 94 and B and C earn Rs 76. Earnings of C is: