If 40% of a number is 16, then the number is  Choose the correct answer:	A) number is 60	B) number is 70	C) number is 90	D) number is 40	E) None of these
Solution:   Let "a" be the number we seek. We get   40% × a = 16   2 × 40% × a = 2 × 16 = 32   80% × a = 32   10% × a = 32 : 8 = 4   100% × a = 4 × 10 = 40   a = 40   Answer number is 40
<result>D</result>
If 40% of a number is 16, then the number is