20 beavers, working together in a constant pace, can build a dam in 3 hours.How many hours will it take 12 beavers that work at the same pace, to build the same dam?
Answer(s): A
20 beavers worked 3 hours; therefore 60 hours of work were needed to build the dam. 60 hours / 12 beavers = 5 hours of work to complete the same dam.
B and A are consecutive numbers. If A + B + X =15 than what is true about X?
Answer(s): D
A + B is an odd number; in order for the sum to be equal to 15 X must be an even number.
A and B are numbers between 0 and 9. When multiplying 56 by another number the result is 1AB. which of the following can represent A?
Answer(s): C
We have two choices: 56 x 2 = 112 or 56 x 3 = 168. Therefore, A could be 1 or 6. The answer is A = 6.
Q and R are numbers between 0 and 9. When multiplying 71 by another double-digit number the result is 7PQ. Which of the following could represent Q?
We have two choices: 71 x 10 = 710 or 71 x 11 = 781. Therefore, Q can be 0 or 1. The answer is A.
A and B are numbers between 1 and 9. What is ABAB/AB? (AB is a two-digit number and ABAB is a 4-digit number).
Plug in numbers: A = 1, B = 2 AB = 12, ABAB = 1212. 1212/12 = 101.
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