Homework Help: math

Posted by joe on Wednesday, June 6, 2012 at 6:35pm.

j costs twice as much as b. b costs twice as much as k. all three letters together cost 17.50. what is the price of each letter?

math - Ms. Sue, Wednesday, June 6, 2012 at 6:38pm
b = 2k
j = 4k

k + 2k + 4k = 17.50

7k = 17.50

k = 17.50/7

k = 2.50

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