If 35% of a number is 12 less than 50% of that number, then the number is :
A
40
B
50
C
60
D
80
Correct Answer: 80
Hints: ধরি সংখ্যটি x তাহলে, 35x/100 = 50x/100 - 12 35x - 50x = - 1200 15 x = 1200 x = 80