4a-13=19 add 13 to both sides
4a=32 divide by 4 on both sides
a=8
So it took him 4/5 of an hour to paint 1/3
that means there is still 2/3 to go
so that means that he will have two times that time to paint the rest of the room
<u>4/5</u> = <u> ? </u>
1/3 2/3
using cross multiplication
(4/5)(2/3) = (1/3) (?)
8/15 = 1/3 ?
divide both sides by 1/3
so that will be 8/5
that means it will take 8/5 of an hour to complete the rest
or 12/5 total to do entire room
Hope this helps ;)
Answer:3360
Step-by-step explanation:
Answer:
19 seconds
Step-by-step explanation:
the first sandwich is 12 seconds and the next is an extra 4 which brings us to 16 than it takes 1 extra second and 1 times 3 is 3 and 16+3=19
