Lamya spent her graduation money on a video game that cost AED 24, a controller for AED 13, and a memory card for AED 16. The total tax was AED 3.
Write and solve a subtraction equation to find how much money Lamya gave the cashier if she received AED 4 in charge.

Johnny rode his bike to a friends house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was unable to play. what was his displacement for the total bike ride trip? what could you use as a reference point ? show the steps to solve this problem.