Maria, Carolina and Pedro receive $800 from their grandmother in the ratio
Maria Carolina: Pedro = 7:5:4.
(a) Calculate how much money each receives.
(b) Maria spends of her money and then invests the rest
for two years at 5% per year simple interest.
How much money does Maria have at the end of the two years?
(c) Carolina spends all of her money on a hi-fi set and two years
later sells it at a loss of 20%.
How much money does Carolina have at the end of the two years?
(d) Pedro spends some of his money and at the end of the two
years he has $10.
Write down and amplithe
Sunts of money