Answer:
6 hours.
Step-by-step explanation:
The formula sort of has to be invented.
Al
rate = 1 shed / 2 hours
Tom
rate = 1 shed / x hours.
Together.
rate = 1 shed / 1.5 hours.
Equation
1 shed / 2 hours + 1 shed / x hours = 1 shed / 1.5 hours.
1/2 + 1/x = 1/1.5 Put the fractions over a common denominator.
(x + 2) / 2x = 1 / 1.5 Cross Multiply
1.5(x + 2) = 2x Remove the Brackets.
1.5x + 3 = 2x Subtract 1.5x from both sides
3 = 2x - 1.5x
3 = 0.5x Multiply both sides by 2
6 = x
It would take Al 6 hours to do the shed on his own.
Answer:
0.975
Step-by-step explanation:
Zach
1.5 hrs = 1 hrs 30 mins
2.83 x 1.5 = 4.245 miles
Nora
2.18 x 1.5 = 3.27 miles
4.245 - 3.27 = 0.975
Zach walks a total of 0.975 miles longer
Answer:
- (139/2)
Step-by-step explanation:
18 1/2 -2^3•(4 1/3 + 6 4/6)
= 37/2 - 8 .( 13/3 + 40/6)
= 37/2 - 8 x 11
=37/2 - 88
= - (139/2)
Answer:
Step-by-step explanation:
You can draw a rectangle with one side of the rectangle being 8 units, while the other side being (3x - 1) units.
Answer:she will earn $200 in 5 weeks
Step-by-step explanation:
Susan takes care of a child for 2 hours after school each weekday and 6 hours on Saturday. There are 5 school days in a week. Total number of hours that she spends in taking care of the child during the weekdays would be 5×2 = 10 hours.
Total hours for the week would be
10 + 6 = 16 hours
Total amount of hours in 5 weeks would be
5 × 16 = 80
If she earns 2.50 per hour, it means that in 80 hours, she would earn
2.5 × 80 = $200