(7/30)÷(2/5)×(1/3)
=(7/30)×(5/2)×(1/3)
7/36(吨)
3/4÷[(7/30)÷(2/5)]
=3/4÷[(7/30)×(5/2)]
=3/4÷(7/12)
=3/4×(12/7)
=9/7(吨)
=1又7分之2吨
(7/30)÷(2/5)×(1/3)
=(7/30)×(5/2)×(1/3)
7/36(吨)
3/4÷[(7/30)÷(2/5)]
=3/4÷[(7/30)×(5/2)]
=3/4÷(7/12)
=3/4×(12/7)
=9/7(吨)
=1又7分之2吨