The ratio between the number of Anita's cousins and the number of Juan's cousins is 5:8. If Anita has 15 cousins, how many does Juan have?
Zhou has a job assembling bicycles in a sporting goods store. He assembled 8 bicycles in a 5 h shift. What was his unit rate?
Randall did a survey, and found out that 3 times as many of his classmates know how to swim compared to those who do not. What percent of the class know how to swim?
The cost of a luxury car compared to a mid-size family car is in the ratio 3:2. The cost of the mid-size family car to an economy car is 2:1. What is the ratio between the cost of a luxury car and the cost of an economy car?
Louise traded 12 common baseball cards to obtain 5 rare cards. At the same rate, how many cards would she have to trade to obtain 15 rare cards?
Tineke sells apples at the market. On a given day, the ratio of red delicious to macintoshes to granny smiths sold is 4:3:2. If her truck can carry 180 bushels of apples, how many bushels of granny smiths should she include?
Harold's Woodworking Shop can make 10 CD shelves from 4 sheets of plywood. The local radio station has ordered 50 CD shelves. How many sheets of plywood are required?
The volume of the fuel tank on Carl's truck compared to fuel tank on Maria's car is in the ratio 7:4. If Maria needs 28 L of gasoline to fill her tank, how much does Carl need?
The Fort Tunatsen antique instrument club has 24 members. Half of them own an antique piano, while 1/4 own an antique organ. Another 1/6 own an antique brass instrument, while the rest have not yet purchased an antique instrument. How many have not yet purchased an antique instrument?
Sally can pedal her bicycle 20 km in 2 h, while Antonio can pedal his bicycle 18 km in an hour and a half. If each enters a 24 km race, and pedals at these same rates, which will win the race, and by how much time?
|A)||Sally and Antonio will tie.|
|B)||Sally will win by 0.4 h.|
|C)||Antonio will win by 0.4 h.|
|D)||Antonio will win by 0.5 h.|