Ratios & Proportions Mock Tests

A water tank is being filled at a constant rate. If 3/8 of the tank is filled in 15 minutes, what is the total time, in minutes, to fill the entire tank?

A mixture of juice and water is in the ratio 5:2. If the mixture contains 15 liters of juice, how many liters of water are in the mixture?

A jar contains red, blue, and green marbles. The ratio of red to blue to green marbles is 3 : 4 : 5. If there are 48 marbles in total, how many blue marbles are there?

A store sells apples for $1.50 per pound and oranges for $2.00 per pound. If Maria buys a total of 10 pounds of fruit and spends exactly $17.50, how many pounds of apples did she buy?

A farmer has enough feed to grow 15 acres of corn or 10 acres of soybeans. If the farmer wants to plant 9 acres of corn, how many acres of soybeans can still be planted with the remaining resources?

A recipe calls for flour and sugar in the ratio 7:2. If a baker uses 14 cups of sugar, how many cups of flour are needed?

A solution of 20% salt solution by weight is mixed with a 50% salt solution by weight to produce a 35% salt solution. What is the ratio of the first solution to the second solution by weight?

A car travels 180 miles using 6 gallons of gasoline. At this rate, how many miles can the car travel on 10 gallons of gasoline?