Answer:
17.7 = 18 (when rounded)
Step-by-step explanation:
160 divided by 9 = the amount of trucks.
(x+5)*7=133
7x+35=133
7x=98
x=98/7
x=14
Answer:
Step-by-step explanation:
numerator x numerator
denominator x denominator
2 x 4=8
3 x 5=15
1 8/15
Answer:
40/13 hours
Step-by-step explanation:
Let 1 represent the room being painted.
1/5 would represent 1/5 of a room painted in 1 hour.
1/8 would represent 1/8 of a room being painted in 1 hour
But they are are working together so
(1/5)x + (1/8)x = 1
The lowest common denominator is 5 * 8 = 40
[(1/5)x * 40 + (1/8)x * 40] = 1
8x + 5x = 40
13x = 40
x = 40/13
x = 3.077 hours
But you want a fraction as your answer so it is 3 1/13 or 40/13
You should notice that 3.077 is smaller than the lowest amount of time both of them use. That always happens with these questions.
