A and B together earns 13, 500 in a week

Question

a. the amount B earns in a week?

b. Three-fourths of B's weekly salary? 

Answer 1

You say: A and B together earns 13, 500 in a week

but should have written A and B together earn 13,500 in a week.  What units are applicable ($ or pesos or Euros, etc.)

 

However, you questions cannot be answered because information about each individual's share is not given.