The oil in barrel a is 3.6kg more than that in barrel B, and 1 / 21 of the oil in barrel a is equal to 1 / 7 of the oil in barrel B. then how many kilos of oil was there in barrel a

The oil in barrel a is 3.6kg more than that in barrel B, and 1 / 21 of the oil in barrel a is equal to 1 / 7 of the oil in barrel B. then how many kilos of oil was there in barrel a

If there is x kg oil in barrel a, then there is x-3.6 kg oil in barrel B
Then 1 / 21x = 1 / 7 (x-3.6)
Then x = 3 (x-3.6)
Then 2x = 10.8
So x = 5.4
So there was 5.4kg of oil in a barrel

Three fifths of number a is equal to four seventh of number B. number A: number b = (), number a is less than number B (), number B is more than number a ()

Three fifths of number a is equal to four seventh of number B. number A: number b = (20:21), number a is less than number B (1 / 21), number B is more than number a (1 / 20)

3 / 4 of the number a is equal to 5 / 6 of the number B. what is the number a?

Let a be x, B be y, (3 / 4) x = (5 / 6) y, and shift X / y = 10 / 9, so a / B is 10 / 9

The number a is five seventh of the number B, and what is the number B?
I'm a bit silly! Why is it equal to this number

The number B is the number A: 1 △ 5 / 7 = 7 / 5