Question

phoebe can eat a broccoli and anchovy pizza in 30 minutes,calvin can eat the same pizza in 20 minutes.How long will it take them if theywork together?

Answer 1

Answer:

12 minutes

Step-by-step explanation:

=1/30+1/20

=2+3/60

=5/60

=1/12

so they can eat together in 12 minutes

Answer 2

Answer:

12 mins.

Step-by-step explanation:

Let us assume that the eating of a broccoli and anchovy pizza is equivalent to w work.

Phoebe takes 30 mins to complete w work.

Hence, Phoebe takes 1 min to complete w/30 work.

Similarly, Calvin takes 20 mins to complete w work.

Hence, Calvin takes 1 min to complete w/20 work.

So, they work together, in 1 min they will do (w/30+w/20) =5w/60 =w/12 work.

Therefore, they, working together, will do the complete w work in 12 mins. (Answer)