Answer:
Here is it given 52 men can do a piece of work in 35 days .
Which means total work is 52*35
Therefore total work = 52*35 = 1820.
Now 28 men are alloted to do same work
Let's consider the days taken by 28 men is x
We cans say that 28 men take x days to complete the work
28 * x = 1820
x = 1820/28
x = 65
100% + 30% = 130%
130% x = 520 Change a % to a decimal
(130/100) x = 520
1.3 x = 520 Divide by 1.3
x =520 / 1.3
x = 400
So the original cost of the item was 400 dollars.
Well, If she takes 15 minutes to pick 135 berries, 30 minutes total would be 270 berries, so if you take another 15 minutes picking berries it would be a total of 405 berries but you still need 81 more. so if she can pick 405 in 45 minutes, it would be around a hour and something.
Hope I helped or at least made you think about it