Answer:
60 oz of water to add
45 oz of 35% salt solution should be used
Step-by-step explanation:
Let x = amt no. ounces in the first solution
and 105 - x = amt no. of ounces in the second solution
Ist solution contains 0% salt
2nd solution contains .35(105 - x) salt
.15(105= amt of salt in mix
So.
amt of salt in 1st solution + amt of salt in 2nd solution = amt of salt in the mix
0 + .35(105 - x) = .15(105)
Let's get rid of the fractions by multipying thru the equation by 100
35(105 - x) = 15(105)
3675 - 35x = 1575
-35x = -2100
x = 60 oz of water to add
105 - 60 = 45 oz of 35% salt solution should be used
7 Cups x 5 Hours = 35 Cups sold
89 Cups + 35 = 124 Cups
They stared with: 124 Cups
7 Cups X 15 Hours = 105 Cups
124 - 105 = 19
19 Cups will be left after 15 Hours.
D.) the moon he wanted to go to the moon before any other countries
Answer:
d
Step-by-step explanation: