Roughly 5.25 days at 5 days Plan one is more expensive and at 6 days Plan two is more expensive.
Answer:
$2500
Step-by-step explanation:
This is a simple interest problem. The formula is I = Prt, where I is the interest earned, P is the initial investment, r is the interest rate as a decimal, and t is the time in years. Filling in:
1600 = P(.08)(8) and
1600 = .64P so
2500 = P
11) X= 7, X= -7
(X+7)(X-7)=X^2+7X-7X-49=X^2-49
Answer:
Step-by-step explanation:
Let a represent the charges made hourly by Mechanic 1 and b represent that of Mechanic 2;
a + b = 165, a = 165 - b
10a + 5b = 1200
substitute the value of a in the second equation;
10(165 - b) + 5b = 1200
1650 - 10b +5b = 1200
1650 - 5b = 1200
-5b = 1200 - 1650
-5b = -450
b = 450/5
b = $90/hr
If mechanic 2 charged $90/hr,
a + 90 = 165
a = 165 - 90
a = $75/hr being the hourly rate charged by mechanic 1.
