[Hint: S-1 = 49-S] 5. A small terrace at a foc
built of solid concrete
fino
'ne
Fig. 1.5
20. In a potato race, a bucket is placed at the starting point, which is 5 m from the first potato,
and the other potatoes are placed 3 m apart in a straight line. There are ten potatoes in the
line (see Fig. 1.6).
Each step has a rise o
of concrete required
[Hint : Volume of
이
5 m
3 m
3 m
of
Fig. 1.6
A competitor starts from the bucket, picks up the nearest potato, runs back with it, drops
it in the bucket, runs back to pick up the next potato, runs to the bucket to drop it in, and
she continues in the same way until all the potatoes are in the bucket. What is the tota
distance the competitor has to run?
[Hint : To pick up the first potato and the second potato, the total distance (in metres
run by a competitor is 2 x 5+2 x (5+3)]
an
These exercises are
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