Let his total money be x.
He spent (3/7)*x of his money.
He gave 1/4(x-3/7x) to his sister.
which is : (1/4)*(4/7)*x = (1/7)*x
Now,
How much money he have in the beginning =
(3/7)*x+(1/7)*x+120=x
(4/7)*x+120=x
120=x-(4/7)*x
120=(3/7)*x
x=120*7/3 [cross multiplication]
x=280.
So, Alex had $280 in the beginning.
Answer: 0.0000016
Step by step explanation:
First one is
2x where x equals number of people in your class
second one is
money saved = 1/2y+6 where y equals amount of money in pay check
Answer:
try looking it up on google
Step-by-step explanation:
it would really be helpful
