Question

i need help with 4/5*3/20?

Answer 1

One way
multiply the numbers on the top

4*3 = 12

multiply the numbers on the bottom

5*20 = 100

This gives

12/100

The greatest common factor or the biggest number we can divide 12 and 20 is 4

so

12 divided by 4 = 3

and 100 divided by 4 is 25

This fraction reduces to 4/25

Does that work for you?

Answer 2

I'm not sure where Luis got 2 1/5.

Answer 3

A slight fix.


One way

multiply the numbers on the top

4*3 = 12

multiply the numbers on the bottom

5*20 = 100 This gives 12/100

The greatest common factor or the biggest number we can divide 12 and 100 is 4

so 12 divided by 4 = 3

and

100 divided by 4 is 25

This fraction reduces to 4/25

Does that work for you?

Answer 4

my teacher ended up with 55/72 how did he get that

Answer 5

your teacher was working a different problem.

the answer of 12/100 reduces to 3/25, despite the efforts of Luis and Transend to inject typos.