Question

甲数除以乙数,商是2,余数是5,如果甲数加上8,余数减去4,则商是3

Answer 1

设甲数为x,乙数为y.

x/y=2.5

x=2*y+5

(x+8)/y=3.5-4

x=3*y+1-8

2*y+5=3*y+1-8

y=12

x=12*2+5=29