After interchanging the given two numbers and two signs what will be the values of equations (I) and (II) respectively?
× and +, 3 and 9
I. 7 × 9 - 8 ÷ 2 + 3
II. 4 × 9 - 3 + 8 ÷ 2
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. -26, -29.
Given conditions: × and +, 3 and 9
After interchanging the expression becomes:
I. 7 + 3 - 8 ÷ 2 × 9
= 7 + 3 - 4 × 9 = -26
II. 4 × 9 - 3 + 8 ÷ 2
= 4 + 3 - 9 × 8 ÷ 2
= 4 + 3 - 9 × 4 = - 29