What approximate value will come in the place of the question mark ‘?’ in the following question?
90% of 50 + (1/2) × 30 – 45 ÷ ? = 571
15
2
45
3
30
4
3
5
12
What approximate value will come in the place of the question mark ‘?’ in the following question?
90% of 50 + (1/2) × 30 – 45 ÷ ? = 57