John can finish a paper route in 4 hours, and Andrew
can finish the same paper route in 7 hours. If they work together,
how long would it take them to finish the paper route?

in one hour, John does 1/5 of the route and Andrew does 1/7

Together, they do 1/x of the whole route, x being unknown.

(1/5)+(1/7)=(1/x) Multiply everything by 35x, the common denominator

7x+5x+35

12x=35

x=35/12 or 2 11/12 hours, or 2h55m

Step-by-step explanation:

24 stickers of people

Step-by-step explanation:

you have 48 stickers in total, therefore make the denominator equal 48 by muliplying each fraction by 6/6

3/8 x 6/6 = 18/48

1/8 x 6/6 = 6/48

add those together to get the total stickers without people

18/48 + 6/48 = 24/48

this means half don't have people

then you can subract that number from the total and you will find the stickers with pictures of people

48/48 - 24/48

24/48