My Math Forum Red and Blue marbles

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

 November 12th, 2018, 10:35 PM #1 Member   Joined: Sep 2018 From: Japan Posts: 35 Thanks: 2 Red and Blue marbles A box contains red and blue marbles. 30% of the marbles are red and 42 of the marbles are blue. How many marbles are there in the box? My work: Let Total = T (3/10)T + 42 = T. So T = 60. My question, is there a better way to do this without doing fractions?
 November 12th, 2018, 11:20 PM #2 Senior Member     Joined: Sep 2015 From: USA Posts: 2,317 Thanks: 1230 30% are red so 70% are blue 42 are 70% 6 are 10% 60 are 100% is that any better for you? Thanks from xoritos
November 13th, 2018, 04:06 PM   #3
Member

Joined: Sep 2018
From: Japan

Posts: 35
Thanks: 2

Quote:
 Originally Posted by romsek is that any better for you?
I'll stick with they way how I did it, thank you

 Tags blue, marbles, red

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