Question

if x :y = 4:9 and difference between X and Y equal to 10 .find X + Y​

Answer 1

Step-by-step explanation:

Hi,

X:Y = 4:9

X/Y = 4/9

X = 4y/9

And,

X - Y = 10

4y/9 - y = 10

4y - 9y = 90

-5y = 90

y = -18

Put the value of y in,

x= 4y/9

x = 4*-18/9 = -72/9 = -8

Therefore,

X + Y = -18 + (-8) = -10

Answer 2

Answer:

26

Step-by-step explanation:

say x and y are 4 and 9

so diff bet x and y

=x~y=4~9=9-4=5.

To get ~ 10 which is 5x2

we double 4 and 9

to 8 and 18

So sum is 8+18

= 26