Arithmeticmedium · Past Paper
Two numbers are in the ratio 3:5. If 10 is added to each, the ratio becomes 5:7. Find the numbers.
A15, 25
B12, 20
C18, 30
D9, 15
✓ Correct Answer: A — 15, 25
(3x+10)/(5x+10) = 5/7 => 21x + 70 = 25x + 50 => 4x = 20 => x = 5. Numbers are 15, 25.
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