Which two signs and two numbers should be interchanged to make the following equation correct?
840 ÷ 38 - 7 + 10 × 12 = 462
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 12 and 38, × and –.
Given equation: 840 ÷ 38 - 7 + 10 × 12 = 462
After interchanging numbers and signs,
(840 ÷ 12) × 7 + 10 - 38 = 462
(70 × 7) + 10 - 38 = 462
490 + 10 - 38 = 462
462 = 462