Question

Sheela took 3 ³/₅ hours in whitewashing a shop and Necia completed whitewashing of similar shop in 3 ³/₇ hours. Who took more time and how much?

Answer 1

Therefore Necia took $(\frac{126}{35}-\frac{120}{35}) =\frac{6}{35}$ hours  more time than sheela took.

Step-by-step explanation:

Given, Sheela took $3\frac{3}{5}$ hours= $\frac{18}{5}$ hours in whitewashing a shop and Necia completed whitewashing of similar shop in $3\frac{3}{7}$hours=$\frac{24}{7}$ hours .

$\frac{18}{5} =\frac{18 \times 7}{5\times 7}$ $=\frac{126}{35}$

$\frac{24}{7}=\frac{24\times 5}{7\times 5}$ $=\frac{120}{35}$

Since  $\frac{126}{35}>\frac{120}{35}$  Therefore $3\frac{3}{5}$ >$3\frac{3}{7}$

Therefore Necia took $(\frac{126}{35}-\frac{120}{35}) =\frac{6}{35}$ hours  more time than sheela took.