Plz answer this question 6,7,8
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question 6
let the age of older sister be O and younger sister be Y
AGC:
O-Y=10
O=10+Y...(1)
O-15=2(Y-15)
10+Y-15=2Y-30 (from eq 1)
-5+Y=2Y-30
-5+30=2Y-Y
25yrs =Y
thus O=10+25=35 yrs
let the age of older sister be O and younger sister be Y
AGC:
O-Y=10
O=10+Y...(1)
O-15=2(Y-15)
10+Y-15=2Y-30 (from eq 1)
-5+Y=2Y-30
-5+30=2Y-Y
25yrs =Y
thus O=10+25=35 yrs
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