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January 30, 2015

January 30, 2015

Posted by **Crystal** on Saturday, January 12, 2013 at 7:42pm.

A) how many weeks did it take to sell all sweaters?

B) what was the selling price in the final week?

For a) I started off by writing it out:

Number of sweaters each week: 300, 280, 240, 180

I got stuck because they don't reduce by a constant common ratio or common difference. How would you figure out this type of question?

Thanks in advance!

- Math -
**Steve**, Saturday, January 12, 2013 at 7:51pmWeek 1: 20 sweaters at $100 = $2000

Week 2: 40 sweaters at $90 = $3600

Week 3: 60 sweaters at $80 = $4800

Week 4: 80 sweaters at $70 = $5600

Week 5: 100 sweaters at $60 = $6000

100+80+60+40+20 = 300 sweaters sold in 5 weeks

A) Took 5 weeks

B) $60 a sweater in the final week

- Math -
**Crystal**, Saturday, January 12, 2013 at 10:11pmOhhhh. Thank you ! I was going about it backwards!

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