The ages of two girls are in the ratio5:7.Eight uears ago their ages were in the ratio7:13.Find their present ages
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Answer:
Step-by-step explanation:
Ratio = 5:7
Let the age of 1st girl be 5x
2nd!= 7x
8 years ago
A to q
5x - 8 : 7x - 8 = 7:13
On cross multiply
13(5x-8) = 7(7x-8)
65 x - 104 = 49x - 56
65x - 49x = -56 + 104
16x = 48
X = 48/16 = 3
Present ages =
1st girl, 5x = 5×3 = 15
2nd girl! 7x = 7×3 = 21
Hope it helps uh
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