1. Solve :
1) The ages of Sonu and Monu are in the ratio 7: 5. Ten years later, the ratio of their ages ԝill be 9: 7. Find their present age.
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1. Solve :
1) The ages of Sonu and Monu are in the ratio 7: 5. Ten years later, the ratio of their ages ԝill be 9: 7. Find their present age.
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Answer:
the age of Sonu be x and monu be y
x-7=y-5
10(x-7)=10(y-5)
10x-70=10y-50
x=7,y=5
Step-by-step explanation:
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Answer:
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Step-by-step explanation:
Let the present age of Sonu be 7x years
Present age of Monu be 5x years
Hence,
So, (7x + 10) / (5x + 10) = 9 / 7
by using cross-multiplication we get,
7(7x + 10) = 9(5x + 10)
49x + 70 = 45x + 90
49x – 45x = 90 – 70
4x = 20
x = 20/4 = 5
Hence,