75比50多(50)%
(75-50)÷50
=25÷50
=50%
48比60少(20)%
(60-48)÷60
=12÷60
=20%
从甲地到乙地,客车要行4小时,货车要行5小时,客车的速度比货车快(25%),货车的速度比客车慢(20%)
(1/4-1/5)÷1/5
=1/20÷1/5
=25%
(1/4-1/5)÷1/4
=1/20÷1/4
=20%
75比50多(50)%
(75-50)÷50
=25÷50
=50%
48比60少(20)%
(60-48)÷60
=12÷60
=20%
从甲地到乙地,客车要行4小时,货车要行5小时,客车的速度比货车快(25%),货车的速度比客车慢(20%)
(1/4-1/5)÷1/5
=1/20÷1/5
=25%
(1/4-1/5)÷1/4
=1/20÷1/4
=20%