the ages of Sonu and Monu are in ratio 7 is to 5 .10 years hence the ratio of their ages will be 9 is to 7. find their present ages
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Answer:
The Present ages are -
Sonu = 35 years
Monu = 25 years
Step-by-step explanation:
Given :
Ages of Sonu and Monu are in Ratio = 7 : 5
Ratio after 10 Years = 9 : 7
To Find :
Their present Ages
Solution :
Let the present Ages be -
- Sonu as 7x
- Monu as 5x
➡ (7x + 10)/(5x + 10) = 9/7
➡ 7(7x + 10) = 9(5x + 10)
➡ 49x + 70 = 45x + 90
➡ 49x - 45x = 90 - 70
➡ 4x = 20
➡ x = 20/4
➡ x = 5
Sonu's age =
➡ 5 × 5
➡ 25
Monu's age =
➡ 7 × 5
➡ 35
The Present ages are -
- Sonu = 35 years
- Monu = 25 years
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