Question : Directions: Which two signs should be interchanged to make the given equation correct? 60 × 4 + 9 ÷ 3 – 8 = 34
Option 1: + and –
Option 2: ÷ and +
Option 3: + and ×
Option 4: ÷ and ×
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Correct Answer: ÷ and ×
Solution : Given: 60 × 4 + 9 ÷ 3 – 8 = 34
Replace the given symbols in the options one by one with the original symbols in the given equation – First option: + and – = 60 × 4 – 9 ÷ 3 + 8 = 60 × 4 – 3 + 8 = 240 – 3 + 8 = 248 – 3 = 245 ≠ 34 Second option: ÷ and + = 60 × 4 ÷ 9 + 3 – 8 = 60 × 0.44 + 3 – 8 = 26.4 + 3 – 8 = 29.4 – 8 = 21.4 ≠ 34 Third option: + and × = 60 + 4 × 9 ÷ 3 – 8 = 60 + 4 × 3 – 8 = 60 + 12 – 8 = 72 – 8 = 64 ≠ 34 Fourth option: ÷ and × = 60 ÷ 4 + 9 × 3 – 8 = 15 + 9 × 3 – 8 = 15 + 27 – 8 = 42 – 8 = 34
So, only the fourth option satisfies the R.H.S. of the given equation. Hence, the fourth option is correct.
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