SOLUTION: Mike has a large tropical fish collection. He gives 2/3 of his fish to the high school. Then he gives 2/5 of the remaining fish to the elementary school. In the end, he has 30 fish
Algebra ->
Percentage-and-ratio-word-problems
-> SOLUTION: Mike has a large tropical fish collection. He gives 2/3 of his fish to the high school. Then he gives 2/5 of the remaining fish to the elementary school. In the end, he has 30 fish
Log On
Question 934484: Mike has a large tropical fish collection. He gives 2/3 of his fish to the high school. Then he gives 2/5 of the remaining fish to the elementary school. In the end, he has 30 fish left. how many fish did he have at first?
3/5 = 30; 3 units = 30
1 unit = 10
5 units = 50
50*3 = 150 fishes originally
Please show me how to do this problem algebraicaly.
You can put this solution on YOUR website! OK, originally he had .
He gave the high school which leaves him with
He gave to the elementary school which leaves him with .
You can put this solution on YOUR website! Let = the number of fish he started with
He gives of his fish to the high school.
That means he has left
--------------
he gives of the remaining fish to the elementary school. goes to the elementary school
--------------
He has fish left
This is telling you that:
is the number of fish he has left and
He started with 150 fish
----------------------
check: goes to the high school
He has left goes to the elementary school
He has left
OK
