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Two Numbers Are in the Ratio 2 : 3. If 5 is Added to Each Number, the Ratio Becomes 5 : 7. Find the Numbers. - ICSE Class 10 - Mathematics

Question

Two numbers are in the ratio 2 : 3. If 5 is added to each number, the ratio becomes 5 : 7. Find the numbers.

Solution

Let the two numbers be 2x and 3x.
According to the given information,
=(2x +5) /(3x+ 5) = 5/7

14x + 35 = 15x + 25

x = 10
Thus, the numbers are 2 × 10 = 20 and 3 × 10 = 30.

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Selina Solution for Selina ICSE Concise Mathematics for Class 10 (2018-2019) (2017 to Current)
Chapter 7: Ratio and Proportion (Including Properties and Uses)
Ex.7A | Q: 9

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Solution Two Numbers Are in the Ratio 2 : 3. If 5 is Added to Each Number, the Ratio Becomes 5 : 7. Find the Numbers. Concept: Ratios.
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