Question

What is the solution to the problem expressed to the correct number of significant figures? (102,900 ÷ 12) + (170 × 1.27) = ? A. 8,790 B. 8,790.9 C. 8,791 D. 8,800

Answer 1

As per as the Multiplication rules of the significant figures, whenever any numbers in the decimals forms are multiplied or divided then result in mentioned in such a way so that the significant figures after the decimal will be same as that in the given least condition.

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102900/12 = 8575

170 × 1.27 = 215.9

∴ (102,900 ÷ 12) + (170 × 1.27) =  8575 + 215.9

= 8790.9

Now, As per as Above rules, answer in correct significant figures will be = 8791.

Hence, Correct answer is Option (c).

Hope it helps.