Which two numbers from among the given options should be interchanged to make the given equation correct?
(42 ÷ 7) × 5 = 30 × 120 ÷ (10 + 5 × 2)
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 10 and 30.
Given equation: (42 ÷ 7) × 5 = 30 × 120 ÷ (10 + 5 × 2)
Option 1: 10 and 30
After interchanging the expression becomes:
= (42 ÷ 7) × 5 = 10 × 120 ÷ (30 + 5 × 2)
= 6 × 5 = 10 × 120 ÷ 40
= 30 = 10 × 3
= 30 is equal to 30.
As we have found our answer, there is no need to check further options.
Hence, option 1 is the correct answer.