mark went to the department store to buy gifts for his friends. he spent half of his money plus 50 at store A. he then spent half of the remaining money plus 100 at store b at the end he had 250. how much money did he have at the beginning

Answer 1

money at beginning --- x
money spent in store A = x/2 + 50
amount left after shopping in A = x - x/2 - 50
= x/2 - 50

money spent in store B = (1/2)(x/2 - 50)+100
= x/4 - 25 + 100
= x/4 + 75

amount left = x/2 - 50 - (x/4 + 75)
= x/4 - 125
but that is 250

x/4 - 125 = 250
x/4 = 375
x = 1500
He started with 1500 units of money

check:
amount spent in store A = 800
amount left after that = 700
amount spent in store B = 450
amount left = 700 - 450
= 250 , yeahhh