Question

Radhika finishes2/7 of her homework in the first week and 3/5 in the second week. What part of the homework remains to be finished in the third and fourth weeks of her holidays?

Answer 1

Hey!!

Let us take the total home work as ' x '

Finished 2 ÷ 7 on first week

Finished 3 ÷ 5 on second week

If we add them

( 2 ÷ 7 ) + ( 3 ÷ 5 )

LCM = 35

10 + 21 ÷ 35

31 ÷ 35

Now, home work left =

1 - ( 31 ÷ 35 )

LCM = 35

35 - 31 ÷ 35

4 ÷ 35 home work is left

Hope my answer helps!

#PeaceOut

#FIERCE

Answer 2

Given:
Radhikha finished...
2/7 part of Homework in 1st week
3/5 part in 2nd week

Let the remaining Homework be 'x'

Then (2/7 + 3/5) + x = 1
→31/35 +x =1
→x = 1- (31/35)
→x=4/35

so In all...
if we divide her homework into 35 parts
she finished::
10 parts in week 1
21 parts in week 2
now Only 4 parts remain to be completed within week 3 and week 4