Question

Fill in the missing numbers to form equivalent rates.
2/30 = __/15 = __/45

Answer 1

hi sam, so this is a basic ratio problem - do you know how to start it?

Answer 2

no can you gimme the answer

Answer 3

Sorry sam, we're here to help you understand the problem, not give you the answer. Let me start it for you though:

Answer 4

\[2/30 = 1/15\]
The denominator (15) is half of the original (30) so the numerator (1) needs to be also half. Can you figure out the other one?

Answer 5

no i cant

Answer 6

Got a guess? If 2/30 = 1/15 then X/45 - got a guess for X?

Answer 7

2?

Answer 8

i get it

Answer 9

Close! You're almost there - 2/30 = 1/15 right? So now, if I need something over 45 to equal that...

Answer 10

What answer did you come up with?

Answer 11

4

Answer 12

No, sorry - 4/60 = 2/30

Answer 13

So knowing that, now you've got 4/60 = X/45 = 2/30 = 1/15... Leaving what number for X?

Answer 14

5?

Answer 15

3

Answer 16

Yes! Well done!

Answer 17

what one

Answer 18

It's three - to check if you divide both sides of the fraction 3/45 by three you get 1/15

Answer 19

ok thanks

Answer 20

You're welcome.