Posted by justin on Monday, January 28, 2013 at 11:50pm.
The number of Roberto's baseball cards is 3/4 the number of David's cards. If Roberto gives 1/2 of his cards to David, what will be the ratio of Roberto's cards to David's cards?

math  Steve, Tuesday, January 29, 2013 at 11:04am
r = 3d/4, or 4r = 3d
r/2 / (3d/4 + r/2) = 2r/(3d+2r) = 2r/6r = 1/3
check:
If Roberto has 12 cards, David has 16
After Robert gives David 6,
6/18 = 1/3

math  Anonymous, Monday, January 12, 2015 at 5:20pm
the number of roberto's baseball cards is 3/4 the number of david's cards. if roberto gives 1/2 of his cards to david, what will be the ratio of roberto's cards to david's cards?
Answer This Question
Related Questions
 algebraic expression  Roberto decided to get rid of all of his baseball cards ...
 math  Trey keeps sports cards in 3 drawers. Each drawer contains exactly 120 ...
 math  bill and anig both have baseball cards. aniq has four times as many cards...
 Math  Javier bought 48 sports cards at a yard sale. Of the cards, 3 over 8 were...
 Math  Brent counted 10 red cards, 10 black cards, and 20 blue cards in a deck ...
 Math  Clark wants to give some baseball cards to his friends. If he gives 6 ...
 Math Important!  Ozzie's Mother bought an assortment of greeting cards while ...
 3rd grade math  A pile of index cards has a mixture of white, pink, yellow, red...
 math  A box contains 4 red cards, 6 blue cards, and 10 green cards. What is the...
 Math  You make cards and sell them for $2.50 each. It costs $1.15 to print each...
More Related Questions