Question

the difference of two number is 15 and their ratio is 3 ratio 2 find the nuber​

Answer 1

Answer:

By using guess and check method, we will guess the some possible outcomes and test it out.

3 and 2 ( Difference is 1) X

6 and 4 (Difference is 2) X

9 and 6 (Difference is 3) X

45 and 30 (Difference is 15) Yes

Therefore by guess and check, the numbers are 45 and 30.

Method 2 requires mental modelling:

3U - 2U = 1U

As such, 1U represent the difference which is 15.

3U = 15 x 3 = 45

2U = 15 x 2 = 30

Therefore the numbers are 45 and 30.

I hope my answers are clear!

Answer 2

Answer:

45 and 39 is the answer...

Step-by-step explanation:

Given that a - b = 15

a:b = 3 :2

a/b = 3/2

2a = 3b

2a - 3b = 0

Solve a - b = 15 and 2a - 3b = 0

3a - 3b = 45

2a - 3b = 0

Subtract them

a = 45

a - b = 15

b = 30

So, the numbers are 45 and 30