# math

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A. Mandy buy a sweater that is on sale for 20% less than the original price, and then she uses a coupon worth an additional 15% off of the sale price. What percentage of the original price has she saved ?

B. If the price of a stock increases by 40% and then by an additional 25% , by what percentage has the price increased from its original value ?

• math -

.85 * .8 = .68 which is 32 % off

• math -

1.4 * 1.25 = 1.75
75%

• math -

0.85(0.8x)=0.68x => - 32%
1.25(1.4x)=1.75x = > +75%

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