Find the ratio of 7,13,912 : 5,18,027 : 1,51,788
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Step-by-step explanation:
The ages of
′
2
′
persons are in the ratio 5:7
1st person age = 5x
2nd person age = 7x
′
18
′
years ago their ratio 8:13
7x−18
5x−18
=
13
8
13(5x−18)=8(7x−18)
65x−234=56x−144
65x−56x=234−144
9x=90
x=10
1st person age = 5×10=50yrs
2nd person age = 7×10=70yrs
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