7 years ago , the ages of P & Q are in ratio 4 : 5 and 7 years hence, their ages will be in ratio 5 : 6 . What will be ratio of their ages 5 years from now ?
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34 : 41 36 : 39 41 : 13 31 : 41 |
34 : 41 |
7 years ago ratio of age of P and Q = 4 : 5 After 7 years from present = 5 : 6 ATQ, ⇒ \(\frac{4R + 14}{5R + 14}\) = \(\frac{5}{6}\) ⇒ 24R + 84 = 25R + 70 ⇒ 1R = 14 ⇒ 7 years ago age of P = (4 × 14) = 56 and age of Q = (5 × 14) = 70 Now, Rahul's present age => 56 + 7 = 63 years Sahil's present age => 70 + 7 = 77 years Hence, P's age after 5 years = 63 + 5 = 68 Q's age after 5 year = 77 + 5 = 82 Required ratio → 68 : 82 = 34 : 41 |