To divide fractions, you need to multiply by the reciprocal. The reciprocal of 3/4 is 4/3, which is why the work is incorrect.
See attached:
Answer:
The answer is when they work 4 hours x=4
Step-by-step explanation:
510 + 80x = 650 + 45x
80x - 45x = 650 - 510
35x = 140
x = 140/35
x = 4 hours
4250 millimeters.
Half of 8.5m is 4.25m.
4.25 m to mm is 4250.
<span>5 x 4 x 3 x 2 x 1 = 120
The first person can move 5 positions since he is first. The second person can move 4 positions since one is already occupied, and so on...</span><span />
The answer is 1/27.
4/9 divided by 1/27 is 12