Question

应用题1.从甲地到乙地,去时每小时行驶55km,5/6小时到达；原路返回时只用了3/4小时,返回时平均每小时行驶多少km

Answer 1

1.55/(5/6)/(3/4)=88

2.90-80*3/4=30

3.(3/8)/(3/4)/(3/4)=2/3

4.450/(15/4)/30=4