Answer:
D
Step-by-step explanation:
3 1/2 - 1 7/10
7/2 - 17/10 (Common denominator 10, multiply 7 and 2 by 5)
35/2 - 17/10 = 18/10
1 8/10 = 1 4/5
Answer:
(22m+2)/(3m+2)
Step-by-step explanation:
12m+14m-4m+2)/3m+2
(22m+2)/(3m+2)
Answer:
Molly has to add 22.86 milliliters of 5% sulfuric acid.
Step-by-step explanation:
Molly has a mixture of 20 ml of 20% sulfuric acid solution.
She mixes this with 5% sulfuric acid solution and in the end she wants a 12% sulfuric acid solution.
We have to find how many milliliters of 5% sulfuric acid we have to add to make it 12% solution.
Let the volume we add be v milliliters.
We are going to equate sulfuric acid.
v = milliliters
v = 22.86 milliliters
Number of lemonades sold in 90 minutes = 14
3 hours = 3*60=180 minutes
So, number of lemonades sold in 180 minutes =
=28
Hence, the team will sell 28 lemonades in 3 hours.