Question

A girl completed her work in three days .on the first day,she did 2/5 of her work and on the second day, she did 3/7 of her work how much did she do on the third day​

Answer 1

Answer:

38 persent she do at 3 day

Answer 2

At First we add to

$\frac25 + \frac 37$

LCM of 5, 7 is 35

Then,

Multiply $\frac25$from 7 both sides.

Multiply $\frac35$from both sides.

Then Answer,

$\frac{14} {35} + \frac{15} {35}$

$\frac{29}{35}$

Then, Subtract

$\frac{29}{35}$from

$\frac{3}{1}$

$\frac{3}{1} - \frac{29}{35}$

LCM of 1, 35 is 35

Then,

Multiply $\frac{3}{1}$from 35 both sides.

Multiply $\frac{29}{35}$from 35 both sides.

Then Answer

$\frac{105}{35} \: - \: \frac{29}{35}$

$= 8$