Question

The sum of two numbers is equal to thrice their difference. If the smaller of the numbers is 10 find the other number.

A) 15 B) 30 C) 40 D) None of these

Answer 1

Answer:

D) None of these.

Step-by-step explanation:

Let the numbers be x and y.

Given,

x + y = 3(x - y) and the smaller number is 10.

x + y = 3x - 3y

x - 3x = -3y - y

- 2x = - 4y

- gets cancelled.

2x = 4y

x = 4y / 2

x = 2y

Here the smaller number is y.

Therefore y = 10.

x = 2y = 2 × 10

x = 20.

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Answer 2

Answer:

D) None of these

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