# math

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Tim needs batteries.AA batteries cost \$3 per pack.D batteries cost \$4 per pack. If she has \$26 to spend and buys 3 times as many packs of AA batteries as D, how many packs of each does she buy?

• math -

4x+3(3x)=26
4x+9x=26
13x=26
x=2
4(2)+9(2)=26
8+18=26
26=26
8/4=2 D batteries
18/3=6 AA batteries

• math -

I really don't know. I have this problem on my homework and was sooooo confused.

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