The sum of 20% of a and 4 is equal to 2 / 3 of B. If a is 80, find B

The sum of 20% of a and 4 is equal to 2 / 3 of B. If a is 80, find B

Hello:
Number B:
(80 × 20% + 4) △ 2 / 3
=(16 + 4) △ 2 / 3
=20 △ 2 / 3
=30

3 / 5 of a is equal to 3 / 4 of B. It is known that B is 80 and a is ()

3 / 5 of a is equal to 3 / 4 of B. It is known that B is 80
Let a be X
3x / 5 = 3 × 80 / 4
3x of 5 = 60
X=100
The number of a is 100

2 / 3 of number B is equal to 3 / 4 of number A. number a is 80. What's number B? (use equation solution)

Let B be X
2/3 X＝80×3/4
X＝60÷2/3
X＝90

Given that 25 of a is equal to 825 of B, and that a is 80, what is B?

80 × 25 △ 825 = 80 × 25 × 258 = 100 a: B is 100