Need help, please?

Question

Together Anna and Carla can spray-paint a van in 8 hours. Alone it takes Anna 2 hours less than Carla. Find the time it takes each of them to paint the van alone. Give your answers to the nearest tenth of an hour.

Please answer as accurately as possible! Thanks sooo much :D

Answer 1

Together it takes them 8 hours, so alone it would take them about
8x2= 16. I'd guess Anna takes about 14 hours and Carla takes about 18.

Answer 2

Together it takes them 8 hours, so alone it would take them about
8x2= 16. I'd guess Anna takes about 14 hours and Carla takes about 18.

Answer 3

A= C-2
C= C
8= (C+C-2)/2
8=C-1
C=9
(9 + 9 -2 )/2= 8

It takes Carla 9 hours and Anna 7 hours

I'm not very good at math, but this is all I could think of in the spur of the moment

Answer 4

togethet in 1 hour they can paint 1/8th of the van
let Anna take x hours and Carla x+2 hours
in one hour anna can paint 1/x of the van
and carla can paint 1/(x+2) of the van
the eqution is
(1/x)+(1/(x+2))=1/8
(2x+2)/x(x+2)=1/8
cross multiplying
16x+16=x^2+2x
=>x^2-14x-16=0
solving
x=[14+/-(196-64)]/2
=[14+/-2(33)^1/2]/2
=7+/-(33)^1/2
the negative value shall be ignored
x=12.7 approximately
so Anna will take 12.7 hours and
Carla14.7 hours

Answer 5

It would take Anna 15.062 hours and slow Carla 17.062 hours.
8/15.062 + 8/17.062 = 1.0000 vans. I can extend the decimal point as necessary; they'll duplicate the post-integer part of the square root of 65 (.0622577...)

Answer 6

Anna = 15
Carla = 17

Answer 7

Do your own homework or go to homework help if you don't understand the question.

Answer 8

Are you sure that you want to trust total strangers to do your thinking for you?

Answer 9

Ugh...math.