If four friends can eat four cakes in four days, then how many cakes can 10 friends eat in 10 days?

Hey there,

Your question states: If four friends can eat four cakes in four days, then how many cakes can 10 friends eat in 10 days?

10 friends = 1/4 

2.5 × 10 = 25

If we do 10 ×10 = 100.

25 is 1/4 of 100.

They eat 25 cakes (per) 10 days.

Hope this helps.
~Jurgen