Answer:
5 months
Step-by-step explanation:
Value m= months
Gym A Money needed to pay= 30m+ 39
Gym B Money needed to pay= 20m+ 89
30m+ 39= 20m+ 89
Now isolate m
(30m-20m) + (39-39)= (20m-20m) + (89-39)
10m = 50
10m/10= 50/10
m=5; You can plug this number in to check my answer.
Answer:
4 litres of 12% solution
2 litre of 24% solution
Step-by-step explanation:
Let the 12% solution = l
Let the 24% solution = h
Dimitri needs a total of 6 litres of both :
l + h = 6 - - - - - - - - (1)
He needs a mixture of both volumes of both to give a 16% volume
12%l + 24%h = 16% * 6
0.12l + 0.24h = 0.96 ----(2)
From (1)
l + h = 6;
l = 6 - h
Substitute l =6-h into (2)
0.12(6 - h) + 0.24h = 0.96
0.72 - 0.12h + 0.24h = 0.96
0.72 + 0.12h = 0.96
0.12h = 0.96 - 0.72
0.12h = 0.24
h = 0.24 / 0.12
h = 2
From ;
l = 6 - h
l = 6 - 2
l = 4
A. Take out the cost of the boots since you know how much they are. Then divide by 4 since the 4 sandals cost the same to figure out how much 1 pair of sandals is. :)
Answer:
11
Step-by-step explanation:
