Ricardo ran the 400-meter race 3 times ,his fastest time was 54.3 seconds, his slowest time was 56.1 seconds, if his average time as 55.0 second what was his time the third race.

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

The holiday party will cost $160 if 8 people attend. if there are 40 people who attend the party, how much will the holiday party cost