Find the whole.20% of what number of lanes is 62 lanes?
A. 31 lanes
B. 310 lanes
C. 3100 lanes
D. 12 lanes
Answer: B
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Solve the problem.The perimeter of a rectangle is 40 inches and its area is 99 square inches. What are its dimensions?
A. 8 in. by 10 in. B. 9 in. by 11 in. C. 8 in. by 12 in. D. 10 in. by 10 in.
Simplify the expression using the order of operations. Write the answer as an improper fraction where appropriate.11 + 55 ÷ 5 ? 2
A. 
B. 121
C. 
D. 33
Express the exercise as a system of linear equations, then find the solution. Use a calculator where appropriate.Julie and Eric row their boat (at a constant speed) 32 miles downstream for 4 hours, helped by the current. Rowing at the same rate, the trip back against the current takes 8 hours. Find the rate of the current.
A. 3 mph B. 6 mph C. 1.5 mph D. 2 mph
Solve.The difference between a country's exports and imports is called the country's trade balance. A country had a trade balance of -$102 billion one year, $98 billion the next year, and -$37 billion the third year. What was the total trade balance for these three years?
A. -237 billion dollars B. 237 billion dollars C. -41 billion dollars D. 41 billion dollars