Which of the following interchanges of signs would make the given equation correct?
173 ÷ 169 + 13 × 5 - 13 = 225
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. ÷ and +.
Given series: 173 ÷ 169 + 13 × 5 - 13 = 225
This equation becomes true only when we put the set of signs given in option 3.
After interchanging ÷ and + the equation:
173 + (169 ÷ 13) × 5 - 13 = 225
173 + (13 × 5) - 13 = 225
(173 + 65) - 13 = 225
238 - 13 = 225
225 = 225
Therefore, Equation is satisfied.
Hence, the correct answer is ÷ and +.