A watermelon contains 90% water. After some time there is only 12% left in it and its weight is 50 kg. gram . It remains Find the initial weight.
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Let the initial weight of the watermelon be x.
We know it had 90% water at start.
Thus 10%x=weight of watermelon.
After it dries, there is 12%water meaning the mass of watermelon would be 88%x.
This gives us 88/100*x=50
Thus x= 5000/88
=> x=56.81
Thus initial weight (without water) would be 56.81 of whatever unit you had(cant understand)
If you want with water weight, add the weight of water i.e.12%x=12/100*56.81
Initial weight with water=56.81+6.81=63.62
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