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Combinations. Mrs. Kuznia Math 8 Day 15. Rule. Sometimes, we have to apply more than one percent to a given problem. IE: Tax, then tip Sale price, than tax. Rule Continues. NO MATTER WHAT….NEVER add the percents together.
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Combinations Mrs. Kuznia Math 8 Day 15
Rule • Sometimes, we have to apply more than one percent to a given problem. • IE: Tax, then tip • Sale price, than tax
Rule Continues • NO MATTER WHAT….NEVER add the percents together. • To do combination problems, you must apply the first percent, then apply the second. • IE, Find the sale price first, THAN add the tax to it.
Example • You buy a $3500 Used car, that has been discounted 10%, but you must pay tax of 8%.What is the total amount you pay?
Example • You got to Fresno’s and your bill comes to $37.50. You must pay and 4% tax, then leave an 8% tip. What is the total amount you pay?
Example • You buy new DVD for $29.99. It is on sale 15% off, and you must pay 8.25% tax. How much do you pay?
Example • You shop at JC Penny’s and you buy a pair or pants for $34.99, that is on sale 30% off. You also have a coupon that gives you an extra 15% off. How much do you pay?