Amy had 3 times as much money as Betty. After they had spent $60 each, Amy had 4 times as much money as Betty. How much money did Amy have at first? explanation step by step, please
Answers
Answer:
answer is 540
Step-by-step explanation:
solution is given in the pic
QUESTION:-
Amy had 3 times as much money as Betty. After they had spent $60 each, Amy had 4 times as much money as Betty. How much money did Amy have at first?
GIVEN:-
- AMY HAS 3 TIMES AS MUCH AS BETTY HAVE.
- AFTER SPENDING $60 each
- AMY HAD 4 TIMES AS MUCH BETTY HAVE.
EXPLANATION:-
LET BETTY HAD TOTAL OF $ x ,THEN AMY WILL HAVE $3 x .
SO,AFTER SPENDING $60 ,BETTY WILL HAVE $ x -60 AND AMY WILL HAVE $ 3x -60.
SO,IF WE INCREASE BETTY HOLDING BY 4 TIMES THEN THE EQUATION WILL BE EQUAL.
ATQ,
4(x-60)=3x-60
4x-240=3x-60
4x-3x=-60+240
x=-180
SO WE GOT X=180
SO AMMY HAD(BEFORE SPENDING $60) 3x 180 x 3==>$540
AND BETTY HAD (BEFORE SPENDING $60)=x=180
LET'S VERIFY OUR ANSWER,
SO IF WE TAKE AWAY $60 FROM AMY AND BETTY THEN,THE AMOUNT AMY WILL HAVE IS 4 TIMES THAT OF BETTY
SO LET'S TAKE $ 60 FROM EACH.AFTER TAKING BETTY WILL HAVE ,$180-60=120$ AND AMY WILL HAVE 540-60=480.
SO WE SAY AMY NOW HAS 4 TIMES AS MONEY AS BETTY HAVE .
SO HENCE,VERIFIED.