Algebramedium · Past Paper
A father is 30 years older than his son. In 5 years, he will be 4 times as old as his son. Son's age?
A5
B10
C15
D20
✓ Correct Answer: A — 5
s+30+5 = 4(s+5) -> s+35 = 4s+20 -> 3s = 15 -> s = 5.
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✓ Correct Answer: A — 5
s+30+5 = 4(s+5) -> s+35 = 4s+20 -> 3s = 15 -> s = 5.
Share this question