181. Let
the capacity of 1 bucket =X. then, capacity of tank = 25X.
New capacity
of bucket = 2/5 X.
Required
number of buckets = 25X/ (2X \ 5) = (25 X x 5/2X) = 125/2 = 62 1/2.
182. Suppose
initially peter had Rs .X. then,
Amount
received by Michael = Rs. (x/4).
Amount
remaining with peter = Rs. ( x – x/4) = Rs. (3x/4).
Amount
received by Sam = Rs. (1/2 x x/4) =Rs. (x/8).
3X/ 4 –
X/8 = 500 %x = 4000 X = 800.
183. A’s
share = 1/3. Remainder = (1 -1/3) =2/3.
B’s
share = 2/5 of 2/3 = 4/15. Rest = (2/3 -4/15 ) = 6/15 = 2/5.
C’s
share =D’s share = ½ of 2/5 = 1/5.
184. Part
read on first day = 3/8.remaining part = (1 -3/8) = 5/8.
Part read
on second day = 4/5 of 5/8 = ½. Unread part = [1 – (3/8 + 1/2)] = 1/8.
Let the
number of pages be X. then, 1/8 x = 30 or x =30 x 8 = 240.
185. Wife’s
share = 1/2 .remaining part = (1 -1/2) =1/2.
