
Multiply 20 by 5 to get 100 so multiply the 3 by 5 also to get 15% of the days.
Answer:
b=-8
Step-by-step explanation:
9+1/4b=7
-2=1/4b
b=-8
Answer:
9
Step-by-step explanation:
Answer:
x = 11 and y = 4
Step-by-step explanation:
Given equations are :
x+y=15 ...(1)
-2x+5y=-2 ...(2)
We need to solve the systems of equations.
Multiply equation (1) by 2.
2x+2y=30 ...(3)
Adding equation (2) and (3).
-2x+5y+2x+2y = -2+30
7y = 28
y = 4
Put the value of y in equation (1).
x+4=15
x = 11
So, the solution of the given equations are x = 11 and y = 4.