Current location - Training Enrollment Network - Mathematics courses - The second volume of mathematics in the sixth grade takes out 15% oil from barrel A and pours it into barrel B. The weight of barrel A is a few percent of that of barrel B..
The second volume of mathematics in the sixth grade takes out 15% oil from barrel A and pours it into barrel B. The weight of barrel A is a few percent of that of barrel B..
Solution: Look at the unit "1", then

B barrel oil weight is

1- 15%- 15%

= 1-0. 15-0. 15

=0.7

Barrel a is barrel B.

1÷0.7x 100%≈ 142.86%