80% of a number is four times more than two fifths of it

80% of a number is four times more than two fifths of it

The number is: 4 (80% - 2 / 5) = 10

25 of 80 is 16% of a certain number, and a certain number is______ The number a is 20% less than the number B, and the number B is more than the number a______ ．

(1) 80 × 25 △ 16% = 125; a: a certain number is 125. (2) the score of a number is 1-20% = 80%, B number is more than a number: (1-80%) / 80% = 15 × 54 = 0.25 = 25%; a: B number is 25% more than a number

20 grams of () is 15 grams, 20 meters is 4 / 5 of (), () is 5 / 6 of 30, 1 / 4 of the reciprocal of 4 / 5 is (), 2 / 5 of () is 120
two-thirds

20 grams (3 / 4) is 15 grams
20 meters is four fifths of (25 meters),
(25) is 5 / 6 of 30
1 / 4 of the reciprocal of 4 / 5 is (5 / 16)
Two fifths of (200) is equal to two thirds of 120