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) $\frac{\mathrm{Initial}\mathrm{weight}-\mathrm{Final}\mathrm{weight}}{\mathrm{Initial}\mathrm{weight}}\times 100$

(2) $\frac{\mathrm{Final}\mathrm{weight}-\mathrm{Initial}\mathrm{weight}}{\mathrm{Initial}\mathrm{weight}}\times 100$

(3) $\frac{\mathrm{Final}\mathrm{weight}-\mathrm{Initial}\mathrm{weight}}{\mathrm{Final}\mathrm{weight}}\times 100$

(4) $\frac{\mathrm{Initial}\mathrm{weight}-\mathrm{Final}\mathrm{weight}}{\mathrm{Final}\mathrm{weight}}\times 100$

Answer 1

The correct formula for calculating the percentage of water absorbed, is:

$\frac{\mathrm{Final}\mathrm{weight}-\mathrm{Initial}\mathrm{weight}}{\mathrm{Initial}\mathrm{weight}}\times 100$

Hence, the correct answer is option 2.