甲数比乙数的80%少20,甲数是40,乙数是(  ) A.25 B.30 C.75 D.90

问题描述:

甲数比乙数的80%少20,甲数是40,乙数是(  )
A. 25
B. 30
C. 75
D. 90

(40+20)÷80%,
=60÷0.8,
=75.
答:乙数是75.
故选:C.