A collector has 90 movie posters and 60 band posters. She wants to sell 27 movie posters but still have her poster collection maintain the same ratio of 90:60. If she sells 27 movie
posters, how many band posters should she sell? Complete the explanation to find out how
many band posters she should sell.
Her current ratio of movie posters to band posters is 90:60. If she sells 27 movie posters,
90 63
she will have
left.
so she should sell
band posters.
60

63; 42; 18

Step-by-step explanation:

The ratio 90:60= 1.5

If we set up the equation to we can cross multiply and have 90x=3780 Then we would divide 3780 by 90 to leave x by itself and x=42.

Once we have x we can substitute it in the ratio and check our answer by making sure that 63 divided by 42= 1.5.

We need to have a total of 42 band posters and we have 60 which means we need to sell 18 band posters.

i got 142 as my answer

step-by-step explanation:

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.