Question

11. Which number should be subtracted from each
of the numbers 17, 14, 22, 18 so that the resulting
numbers are in proportion ?
(4 marks)​

Answer 1

Answer:

The answer is (C) 6

Let the required number be ‘x’. after subtracting x from the given numbers, we have 23-x, 30-x, 57-x, 78-x.

At this point, you can choose to be lazy and see which option fits, or solve it the “good” way.

(23−x)/(30−x)=(57−x)/(78−x)

Transposing, we get

x2−101x+1794=x2−87x+1710

14x=84

x=6

Answer 2

Step-by-step explanation:

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