Question

1.1/8:5/8=x:24 2.3/4:x=3:12

Answer 1

(1)1/8:5/8=x:24

内项乘内项,外项乘外项得5/8x=3,x=24/5

(2)3/4:x=3:12

内项乘内项,外项乘外项得3x=9,x=3