Question

A part-time worker earned five times as much in September as in each of the other months. What part of the worker's earnings was earned in September?

Answer 1

Suppose that a worker earns x$ every other month. In September he earns 5x. We have that his total earnings are 11*x +5x (Eleven months income plus September). Hence 16x is the amount of total earnings. The ratio of earnings in September to the total earnings is
`(5x)/(16x) = (5)/(16)`=0.3125. Hence, 31,25% of his earnings where accrued in September.