Please help me with this.

Question

The original price for a sweater was $42, but the sweater is on sale for 30% off. The sales tax is 5%. Kensington has to pay $30 to pay for the new sweater. Does Kensington have enough money to buy the sweater?

Answer 1

If the original price of the sweater is $42 and you get it for 30% off, it means that you are only paying 70% of the original price. So, the sale price would be .70 X 42 = 29.40. The sales tax on this is 5%, so the total that you would pay would be 29.40 + (.05 X 29.40)-->29.40(1 + .05)-->29.40(1.05) = 30.87. So, the amount she would need to buy the sweater is $30.87 which is more than $30. She doesn't have enough money then.