Question

Watermelon made of
pulp and water
contains 90% water.
After being dried up
for some hours it
contains 40% water.
If the present weight
is 20 kg. What was
the original weight?​

Answer 1

Answer:

45 kg was the original weight.

Step-by-step explanation:

each 5% contains 5kg so,90% = 45kg.

Answer 2

Given :  Watermelon made of  pulp and water  contains 90% water.

After being dried up  for some hours it  contains 40% water.  and present weight = 20 kg

To Find : original weight of Water melon

Solution:

Let say water  Melon weight   = 10W kg

Water Weight  =  (90/100)10W =  9W kg

Pulp Weight  =  10W  - 9W  =  W kg

it  contains 40% water. and present weight  is 20 kg

Weight of Water  = (40/100)20  = 8kg

Weight of pulp = 20  - 8  = 12 kg

Pulp Weight will remain same

=> W = 12

=> 10W  = 120   kg

original weight of water Melon = 120 kg

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