Question

Solve for b.
5/b = 45/36
b = ?

Answer 1

b = 4

Explanation:

Step 1: Divide 45 by 36 on the right side

1. 5/b = 1.25

Step 2: Multiply both sides by b and flip the equation

2. 1.25b = 5

Step 3: Divide both sides by 1.25

3. b = 4

Answer 2

`\fbox{b=4}`

Cross multiply:

`(5)/(b) =(45)/(36)`

`(5)*(36)=45*(b)`

`180=45b`

Flip the equation:

`45b=180`

Divide both sides by 45:

`(45b)/(45) =(180)/(45)`

`b=4`