Ken buys gummy vitamins.  They are usually $15.00 per bottle at his grocery store, but they are currently 20% off.  On top of that, he has 3 $2.00 coupons.  How much will 3 bottles cost?
The vitamins are $15.00 a bottle and are currently 20% off so that’s 15*.20 = $<<15*.20=3.00>>3.00 off
The vitamins are $15.00 and they are $3.00 off so they are now 15.00-3 = $<<15.00-3=12.00>>12.00
He has 3 $2.00 coupons so that’s 3*2 = $<<3*2=6.00>>6.00 in coupons
He buys 3 bottles at $12.00 each so that’s 3*12 = $<<3*12=36.00>>36.00
He has $6.00 in coupons so his vitamins will now costs 36-6 = $30.00
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