Write a system of equations:
x + y = 125
20x + 15y = 2100
Solving:
x = 125 - y
20(125 - y) + 15y = 2100
2500 - 20y + 15y = 2100
2500 - 5y = 2100
-5y = 2100 - 2500
-5y = -400
y=80
x + 80 = 125
x = 125 - 80
x = 45
The first charges 45$ per hour and the second charges 80$ per hour
Sarah got £48, Liam got £32, and Emily got £112
Answer:
CP = 4500
SP = 5175
As the SP is greater than the CP, it is a profit
Profit = 675
Profit percent = (Profit / CP) * 100
=> (675/4500) * 100
=> 675/45 (As the 2 zeros of hundred in the numerator is cancelled by the 2 zeros of the 4500 in the denominator)
=> 15 (Once you divide 675 by 45)
=> 15 % profit
Therefore, Profit = 15 %
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Answer:
y=-3
Step-by-step explanation: