Which two numbers should be interchanged to make the following equation correct?
3 × 9 + 5 – 18 ÷ 7 = 24
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e 9 and 7
| Understanding |
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Check the options: Option 1: Given equation: 3 × 9 + 5 – 18 ÷ 7 = 24 After exchanging the numbers, expression becomes: 3 × 18 + 5 – 9 ÷ 7 57.7 is not equal to 24. Option 2: Given equation: 3 × 9 + 5 – 18 ÷ 7 = 24 After exchanging the numbers, expression becomes: 5 × 9 + 3 – 18 ÷ 7 45.42 is not equal to 24. Option 3: Given Equation: 3 × 9 + 5 – 18 ÷ 7 = 24 After exchanging the numbers, expression becomes: 3 × 7 + 5 – 18 ÷ 9 = 3 × 7 + 5 – 2 = 21 + 5 – 2 = 26 - 2 = 24 Hence, option 3 is the correct answer. |