My Math Forum  

Go Back   My Math Forum > High School Math Forum > Elementary Math

Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion


Thanks Tree1Thanks
  • 1 Post By Denis
Reply
 
LinkBack Thread Tools Display Modes
November 14th, 2018, 07:25 PM   #1
Member
 
Joined: Sep 2018
From: Japan

Posts: 35
Thanks: 2

Number of Clown and Angel Fish

A tank had 20 clownfish and angelfish. 4 clownfish were sold and some angelfish were added to the tank such that the number of angelfish increased by 50%. After that, there were 18 fish in the tank altogether. How many clownfish were there in the tank at first?

My work:

# of clownfish = C
# of anglefish = A

[1] A tank had 20 clownfish and angelfish
=> C + A = 20

[2] 4 clownfish were sold and some angelfish were added to the tank such that the number of angelfish increased by 50%. After that, there were 18 fish in the tank altogether.
=> C - 4 + (A + .5A) = 18

My question is in [2]. I'm guessing A is the total of anglefish, but we have to add .5A more because of a 50% increase? I'm I correct for what I did in [2]?
xoritos is offline  
 
November 14th, 2018, 07:43 PM   #2
Math Team
 
Joined: Oct 2011
From: Ottawa Ontario, Canada

Posts: 13,632
Thanks: 954

Correct.
Thanks from xoritos
Denis is offline  
Reply

  My Math Forum > High School Math Forum > Elementary Math

Tags
angel, clown, fish, number



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Clown's Paradox krausebj0 Number Theory 2 July 14th, 2013 08:02 AM
My angel stainburg New Users 20 July 9th, 2012 09:37 PM
AREA OF FISH lisamath Real Analysis 1 October 5th, 2007 12:14 PM





Copyright © 2018 My Math Forum. All rights reserved.