Question

Mehul finished colouring a picture in 7/12 hours and charu finished colouring the same picture in 3/4 hours. who worked for longer by how much

Answer 1

% worked by mehul=
$\frac{7}{12} \times 100 = \frac{70}{3} \%$
% worked by charu=
$\frac{3}{4} \times 100 = 45\%$
mehul worked for longer

Answer 2

Mehul worked longer as 7/12-3/4os great time