Which two sings should be interchanged in the following equation to make it correct?
10 + 5 ÷ 10 × 8 - 10 = 16
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. - and +
Given equation: 10 + 5 ÷ 10 × 8 - 10 = 16
From option 2, by interchanging signs - and + , we get
10 - (5 ÷ 10) × 8 + 10 = 16
⇒ 10 - (.5 × 8) + 10 = 16
⇒ (10 + 10) - 4 = 16
⇒ 20 - 4 = 16
⇒ 16 = 16