A barrel of oil is 30kg. The first time you use 16% of this barrel of oil, the second time you use 25% of this barrel of oil, there is & nbsp; & nbsp;) (& nbsp;) (& nbsp;) of this barrel of oil left, there is still more______ Kilogram

A barrel of oil is 30kg. The first time you use 16% of this barrel of oil, the second time you use 25% of this barrel of oil, there is & nbsp; & nbsp;) (& nbsp;) (& nbsp;) of this barrel of oil left, there is still more______ Kilogram

1-16-25, = 56-25, = 1330; 30 × 1330 = 13 (kg); a: 1330 of this barrel of oil is left, and 13 kg is left

Two fifths of a barrel of oil is used in the first time, three eighths of the remaining oil is used in the second time, and how much of the oil is used in the second time?

(1-2/5)*3/8=9/40
It takes 9 / 40 of the barrel of oil

4 m 20 cm = fraction of a meter

Twenty one fifths because 20 cm = one fifth of a meter

Seven meters is a fraction of eight meters, three fifths of eight meters is () and three fifths of () is eight meters

7 meters is 7 / 8 of 8 meters, 3 / 5 of 8 meters is (4.8 meters), and 3 / 5 of (40 / 3 meters) is 8 meters