Question

Please help this is for my son and i dont know it

Answer 1

• 8 cookies

Explanation:

Cookies needed - 30.

Len bakes:

• 30*1/3 = 10

Shailesh bakes:

• 30*2/5 = 12

Remaining to bake:

• 30 - 10 - 12 = 8

Answer 2

8 cookies left to be baked.

Explanation:

Together both of them bakes = (1/3) + (2/5)

=
`(5)/(15) +(6)/(15)`

=
`(11)/(15)` cookies.

So they have baked: (11/15) * 30 = 22 cookies together.

cookies left to be baked: 30 - 22 = 8 cookies.