解:28.5乘以( 88/95 )等于26.4
∵已知28.5乘以一个数等于26.4
需求出这个数
∴设这个数为x
28.5 × x = 26.4
( 28×10+5)/10 × x = (26×10+4)/10
285/10 × x = 264/10
57/2 × x = 132/5
x = 132/5 ÷ 57/2
x = 132/5 × 2/57
∴x = 88/95
答:28.5乘以88/95等于26.4
26.4÷28.5
=264/285
=(264÷3)/(285÷3)
=88/95
28.5乘以0.926315789473684等于26.4