Question

If a man works half as much a boy,
how long would it take 4 men and 8
boys to dig a pit which 8 men will
take 20 days to dig?​

Answer 1

Answer:

Now, we have given that a man works one and a half as much again as a boy. So the number of days 4 men and 8 boys take to dig a pit are 17 days

Answer 2

Answer:

The first equation shows that, after one second, an object will have fallen a distance of 1/2 × 9.8 × 12 = 4.9 m. After two seconds it will have fallen 1/2 × 9.8 × 22 = 19.6 m; and so on.