What is the final amount if 1920 is increased by 5% followed by a further 15% increase? give your answer rounded to 2 dp.

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Dawn is selling her mp3 player for 3 4 of the original price. the original price for the mp3 player was $40. how much is she selling her mp3 player for?

The amount cami raised during last year’s charity walk, $45.50, is 7/10 of the amount she raised this year. which equation represents n, the number of dollars she raised this year?