Two thirds of a is equal to four fifths of B. the simplest integer ratio of a and B is (). If a is 30, B is ()

Two thirds of a is equal to four fifths of B. the simplest integer ratio of a and B is (). If a is 30, B is ()

Six to five, 25

There are two double digits, 8 / 9 of a is equal to 80% of B. the maximum number of a is () and the minimum number of B is ()

81
twenty

There are two double digits of a and B. two fifths of a is equal to one fourth of B. what are the two numbers?

If a and B are set to XY, then x2 / 5 = Y / 4
The reduction result is x = 5Y / 8
So y is a multiple of 8
y=8.16.24.32..
Because XY is two digits, so,
y=16,24,32,40,...,96
Corresponding
x=10,15,20,25,...,60

There are two double digits of a and B, and four fifths of a is equal to one fourth of B. what is the maximum difference between a and B

Four fifths of a is equal to one fourth of B
Then the number a is the number B: 1 / 4 △ 4 / 5 = 5 / 16
Because both a and B are double digits
And the biggest 96 in two digits is a multiple of 16
So the maximum of B is 96, and the maximum of a is 96 × 5 / 16 = 30
So the biggest difference is: 96-30 = 66

One fifth of the number a is equal to one fourth of the number B. the simplest integer ratio of the two numbers a and B

One fifth of the number a is equal to one fourth of the number B. the ratio of the simplest integers a and B is 5:4

There are two double digits in a and B. one third of a is equal to five seventh of B. the difference between the two double digits is ()

A and B have two double digits. If 1 / 3 of a is equal to 5 / 7 of B, then a is equal to 15 / 7 of B,
Number A: number b = 15:7
The maximum difference between the two two digits is:
6*（15-7）=48

If 5 / 8 of a is equal to 1 / 2 of B, then a: B = ()

(5 / 8) a = (1 / 2) B → (both sides of the equation are the same as x8) → 5 a = 4 B → A: B = 4:5

The number of a is 5.4 times more than that of B. what is the sum of a and B?

6.6,x=6,y=0.6

Three fourths of number a is equal to two ninths of number B. what is the ratio of number a to number B?

According to the meaning of the title:
A * 3 / 4 = b * 2 / 9
A / b = (2 / 9) / (3 / 4)
=2/9*4/3
=8/27
The ratio of a to B is 8 to 27

Two thirds of a is equal to three fourths of B (both a and B are not zero), then the ratio of a to B is ()
Two thirds of a is equal to three fourths of B (both a and B are not zero), then the ratio of a to B is ()

Two thirds of the number a is equal to three fourths of the number B (both numbers a and B are not 0), then the ratio of the number a to the number B is (9:8). The first method: suppose that 2 / 3 of a = 3 / 4 of B = 1, then a = 3 / 2, B = 4 / 3, a: B = 3 / 2:4 / 3 = 9:8. The second method: have you ever learned the basic properties of proportion: in proportion, inner term