Which two signs and numbers should be interchanged to make the following equation correct?
16 × 18 + 2 – 14 ÷ 3 = 38
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e 14 and 18, + and ×.
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Given expression: 16 × 18 + 2 – 14 ÷ 3 = 38 Check the options: Option 1:14 and 18, + and – After replacement the equation becomes; =16 × 14 – 2 +18 ÷ 3 =16 × 14 – 2 + 6 =224 – 2 + 6 =230 – 2 =228 Hence, option 1 is not the correct answer. |
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Option 2: 16 and 14, - and × After replacement the equation becomes; =14 – 18 + 2 × 16 ÷ 3 =6.66 Hence, option 2 is not the correct answer. |
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Option 3: 14 and 18, + and × After replacement the equation becomes; = 16 + 14 × 2 – 18 ÷ 3 = 16 + 14 × 2 – 6 = 16 + 28 – 6 = 44 – 6 =38 Hence, option 3 is the correct answer. |
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Option 4: 16 and 3, - and ÷ After replacement the equation becomes; = 3 × 18 + 2 ÷ 14 – 16 = 38.142 Hence, option 4 is not the correct answer. |