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If k + 7 = 16, then the value of 8k - 72 is
(a) 0
(b) 1
(c) 112
(d) 56

Solution:

Let’s find the value of k in the equation k + 7 = 16

k + 7 = 16

k = 16 - 7

k = 9

Now put the value of k = 9 in the expression 8k - 72

8(9) - 72 = 0

Hence out of the four options, the correct option is (a) 0

✦ Try This: If x + 10 = 16, then the value of 8x - 32 is (a) 16, (b) 1, (c) 112, (d) 56

Here, x + 10 = 16

x = 16 - 10

x = 6

Now put the value of x = 6 in the expression 8x - 32

8(6) - 32 = 16

Hence out of the four options, the correct option is (a) 16

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 4

NCERT Exemplar Class 7 Maths Chapter 4 Problem 9

If k + 7 = 16, then the value of 8k - 72 is (a) 0, (b) 1, (c) 112, (d) 56

Summary:

Hence out of the four options, the correct option is (a) 0

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