Question

The sum of two whole numbers is 63. The ratio of these numbers is 2 : 5. The two numbers are:​

Answer 1

Step-by-step explanation:

Let the first no. be 2x and the second no. be 5x

Therefore.2x + 5x = 63

7x. = 63

x. = 63/7

x. =9

Put x = 9 in 2x. and 5 x

2x. = 2 × 9

= 18

5 x. = 5×9

= 45

Hence the two numbers are 18 and 45

Answer 2

Answer: 18 and 45

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Step-by-step explanation:

The ratio of the numbers is 2:5.

Let us consider a proportionality constant: x  (if you don't know what it is, go to the end)

1st number = 2x

2nd number = 5x

2x + 5x = 63

7x = 63

x = 9

1 st number = 2x

= 2(9)

= 18

2nd number = 5x

= 5(9)

= 45

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What is a proportionality constant?

When we say 2 numbers are in some ratio, there can be infinitely many numbers.

2 and 5

4 and 10

6  and 15

8 and 20

all of these are in the ratio 2:5.

lets take 4 and 10,

its 2x and 5x

so here x = 2