If + means -, ÷ means +, - means ×, and × means ÷ then, what is 20 ÷ 10 - 5 + 15?
Show answer & explanation
Correct answer: B
Explanation
+ means −
÷ means +
− means ×
× means ÷
20 ÷ 10 − 5 + 15
By changing the signs
20 + 10 × 5 − 15
Now according to BODMAS:
10 × 5 = 50
So,
20 + 50 − 15
= 70 − 15
= 55
Correct answer: (b) 55