Question

The sum of two number is 45 and their ratio is 7 ratio 8 find the number

Answer 1

Answer:

Let the number be x

now 7:8

7x and 8x

sum of these is equal to 45

So,

7x+8x=45

15x=45

x=45/15

x=3

first no.=7x=7*3

Answer 2

Answer:

let one no. be x other be y

Step-by-step explanation:

x+y=45 eq 1

7x:8y eq 2

from eq 1

x=45-y eq 3

putting value of x in eq 2

7x/8y=7(45-y)/8y

=315-7y/8y

now finding value of y and then putting in eq 3

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