Solving Proportions is a free educational video by Mathademics.It helps students in grades 7 practice the following standards 7.RP.2.c,7.RP.3,.
1. 7.RP.2.c : Represent proportional relationships by equations. For example, if total cost t is proportional to the number n of items purchased at a constant price p, the relationship between the total cost and the number of items can be expressed as t = pn..
2. 7.RP.3 : Use proportional relationships to solve multistep ratio and percent problems. Examples: simple interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, percent error..
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