In a supermarket the prices of a packet of lemon tea and green tea are $4 &$5 respectively.the total price of 17 packets of lemon tea and green tea is $72
a.Let x be the number of packets of lemon tea.Express the number of packets of green tea in term of x .
b. find the number of packets of lemon tea and green tea.
F.1代數方程
2011-11-05 8:23 pm
回答 (1)
2011-11-06 12:28 am
✔ 最佳答案
a. to set up that the number of green tea=(17-x) packetsb.
4x+5(17-x)=72
4x+85-5x=72
-x=-13
iq. x=13
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