Question

It takes 40 seconds to cut 10 in to 10 in cake into 2 to 2 in cake. how long will it take to cut 12 to 12 inch?

Answer 1

• 60 seconds or 1 minute.

Explanation:

We need to cut each side of 10 in cake to:

• 10/2 = 5 pieces

It is possible by 4 cuts. In total the number of cuts is:

• 4 + 4 = 8

Total length of the cuts is:

• 8*10 = 80 in

It took 40 seconds to cut 80 in so each inch of cut takes:

• 40/80 = 0.5 second

Now, total length of cuts of 12 in x 12 in cake is:

• (5 + 5)*12 = 120 in

Time required to cut this cake is:

• 120*0.5 = 60 seconds