Question

Raisins are soaked in water for determining the percentage of water absorbed by raisins. The formula, used by a student, for calculating the percentage of water absorbed, is: (1) (2) (3) (4)

Answer 1

no formula is mentioned as a part of question.

However the formula is
w2-w1/w1 * 100
where w1 = weight of raisins before the experiment 
w2= weight of raisins when water is soaked by them

Answer 2

Answer:

second weight-first weight

_____________________________

first weight*100