Answer:
52.5 days
Step-by-step explanation:
Ten people can dig 2 acres in 7 days.
One person can dig 0.2 acres in 7 days.
Working at half the rate, one person can dig 0.1 acre in 7 days.
8 people can dig 0.8 acres in 7 days.
8 people can dig 6/0.8 * 0.8 acres in 6/0.8 * 7 days.
8 people can dig 6 acres in 52.5 days
Let's start by defining a few variables:
x=width of the floor
x+36= length of the floor
Since area = length x width, we can write the equation:
x(x+36)<2040 ft² (this is your mathematical sentence
Make a chart of the possible values:
x | x+36| Area
30 66 = 1980 fits
31 67 = 2077 *too big
So, all dimensions with length smaller than 30 and widths smaller than 66 fit the system.
x(x+36)=144? Let's try smallest numbers - width of 1 ft, length of 37 ft
1(37)=37 too small
3(39)=117 nope
4(40)=160 nope
So, no, 144 ft² is not a realistic answer.
Answer:
6 percent?
Step-by-step explanation:
.
Answer:
Step-by-step explanation:
P = J - 15
P + J = 55
(J - 15) + J = 55
2J = 40
J = 20 years