Brain Teasers
Three Brothers 2
The ages of three brothers, John, Andy, and Stan total 210. Stan is a fifth older again than Andy, and Andy is a quarter again older than John. How old is each brother?
Hint
j + a + s = 210s = 1.2a
a = 1.25j
thus
j + 1.5j + 1.25j = 210
Answer
j + a + s = 210s = 1.2a
a= 1.25j
thus
j + 1.5j + 1.25j = 210
3.75j = 210
j = 210/3.75
j = 56
a = 1.25j
a = 1.25 * 56
a = 70
s = 1.2a
s = 1.2(70)
s = 84
John 56
Andy 70
Stan 84
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