2500 * 4 – ? * 3 = (427 – 33)
a) 70
b) 50
c) 80
d) 60
e) 90
Sol:
2500 * 4 – ? * 3 =
(427-33)
50 * 4 = ? * 3 + (427-27)
200 – 400 = ? * 3
? * 3 = 200 – 20
? * 3 = 180
? = 60
We will be happy to hear your thoughts