Question

Rishabh and ritu can complete a work in 5/8 hr and 7/10 hr respectively. Who worked longer and by how much?​

Answer 1

Accept the Situation and Move on with Smile.

Answer 2

Answer:

Ritu worked longer than Rishab by extra 3 hrs

Step-by-step explanation:

LCM for 8 and 10 is40

Rishab

$\frac{5}{8} \times 5 = \frac{25}{40}$

Rishab's working time

$\frac{25}{40}$

Ritu

$\frac{7}{10} \times 4 = \frac{28}{40}$

Ritu's working time

$\frac{28}{40}$

Ritu worked longer than Rishab

she worked for extra 3 hrs

$\frac{28}{40} - \frac{25}{40} = 3 \: hrs$