Two numbers are in ratio of 7 ∶ 10 and if the sum of the numbers is 119. Find the difference of the numbers.
Explanation:
Let the numbers be 7x and 10x.
⇒ 7x + 10x = 119 ⇒ x = 7
∴ The numebers are 49 and 70
⇒ Difference of the two numbers = 70 - 49 = 21.
Hence, option (b).
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