Amy finished her history assignment in 144 hours. then she completed her math assignment in 1/3 hours. what was the total amount of time amy spent doing these two assignments?

Can somebody me out with this question

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. after tax the total is 45.99. what percentage of the subtotal is the total?

Louis wants to carpet the rectangular floor of his basement.the basement has an area of 864 square feet.the width of the basement is 2/3 it's length. what is the length of louis's basement