4%

If it takes five bakers five hours to bake five loafs of bread, how long does it take seven bakers to bake seven loafs of bread?

Fact Lab

Interesting fact:

For siblings, the order of birth has no influence on intelligence, even if you keep hearing that firstborns are supposed to be the smartest. It is pure myth. Rather, intelligence depends on genes, age, personality, family size and the age of the parents.