1. if the price of a battery is reduced by $ 1.5 , and 8 batteries cost $52 in total .
what is the original price of one battery?
要設方程黎計.........
2. there are 48% of sudents are boys in school and there are 494 girls .
there are ___________students in the school.
3. the marked price of a pair of shoes is $420. if the shoes are sold at 15% discount ,
how much should Mrs. Chan pay in order to buy 3pairs of shoes??(show steps of
finding the answer )
救命啊.......
2007-08-08 12:30 am
回答 (1)
2007-08-08 12:37 am
✔ 最佳答案
1 Let the original price of a battery be $x8(x-1.5)=52
x=8
The original price of a battery is $8
2 Let the school have x students
x(1-48%)=494
x=950
The school has 950 students
3 The she have to pay $x
x/3=420(1-15%)
x=1071
She has to pay $1071
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