Question 9

If k + 7 = 16, then the value of 8k - 72 is

(a) 0

(b) 1

(c) 112

(d) 56

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Solution

Given equation is k + 7 = 16
$\Rightarrow k = 16 - 7 = 9$
Put the value of k in the equation (8k - 72), we get
$8 (9) - 72 = 72 - 72 = 0$

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