C's mother was four times as old as C ten years ago After 10 years she will be twice as old as C is now How old is C now?
C's mother was four times as old as C ten years ago After 10 years she will be twice as old as C is now How old is C now?
Explanation
Given:
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Ten years ago, C's mother was 4 times as old as C:
10 years ago, C = 15 → mother = 4×15 = 60 → Now = 70
After 10 years, mother = 80 → 2×25 = 50