Question : Directions: Which two signs should be interchanged to make the given equation correct? 42 ÷ 7 + 11 × 87 – 12 = 141
Option 1: ÷ and –
Option 2: ÷ and +
Option 3: x and +
Option 4: – and ×
Correct Answer: x and +
Solution : Given: 42 ÷ 7 + 11 × 87 – 12 = 141
Let's check the options – First option: ÷ and – 42 – 7 + 11 × 87 ÷ 12 = 141 42 – 7 + 11 × 7.25 = 141 42 – 7 + 79.75 = 141 35 + 79.75 = 141 114.75 ≠ 141 Second option: ÷ and + 42 + 7 ÷ 11 × 87 – 12 = 141 42 + .6 × 87 – 12 = 141 42 + 52.2 – 12 = 141 30 + 52.2 = 141 82.2 ≠ 141 Third option: x and + 42 ÷ 7 × 11 + 87 – 12 = 141 6 × 11 + 87 – 12 = 141 66 + 87 – 12 = 141 141 = 141 Fourth option: – and × 42 ÷ 7 + 11 – 87 × 12 = 141 6 + 11 – 1044 = 141 –1027 ≠ 141
So, only the third option satisfies the given equation. Hence, the third option is correct.
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