Which two numbers should be interchanged to make the following equation correct?
(15 ÷ 3)× 11 + 48 −21 × 2 + 8 = 57
(Note: Interchange should be done of the entire number and not individual digits of a given number.)
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 11 and 8.
Given equation: (15 ÷ 3)× 11 + 48 −21 × 2 + 8 = 57
On interchanging the signs:
(15 ÷ 3)× 8 + 48 −21 × 2 + 11 = 57
40 + 48 - 42 + 11 = 57
99 - 42 = 57
57 = 57