Jane earn 2/5 of her monthly slary every 1/2 day. What fraction she earn in a week?

To find out what fraction of her monthly salary Jane earns in a week, we need to determine how many half-days there are in a week.

Since there are 7 days in a week, and she earns 2/5 of her monthly salary every half-day, we can calculate:

Number of half-days in a week = 7 days/week * (2 half-days/day) = 14 half-days/week

Now, we need to calculate the fraction of her monthly salary that Jane earns in a week:

Fraction earned in a week = Fraction earned per half-day * Number of half-days in a week

Fraction earned per half-day = 2/5

Fraction earned in a week = (2/5) * (14 half-days/week)

To simplify, we can cancel out the factors:

Fraction earned in a week = (2 * 14) / (5 * 1)

Therefore, Jane earns a fraction of (28/5) or 5 and 3/5 of her monthly salary in a week.