The largest whole number that can go into these three number, 28, 42, and 70 is:
14
2 times 14 equals 28
3 times 14 equals 42
5 times 14 equals 70
Or it could be 28 if you allowed non-whole numbers in the equation:
1 times 28 equals 28
1.5 times 28 equals 42
2.5 times 28 equals 70
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42 / .60 = 70
Nine: 7, 14, 21, 28, 35, 42, 49, 56, 63.
all multiples of 14 so: 14, 28, 42, 56, 70 etc 7 times any even number.
The first 10 multiples of 7 are: 7, 14, 21, 28, 35, 42, 49, 56, 63, and 70.
There were 60 questions on the test. In order to solve this problem, set up the equation 42 = .70 * X, where X is the number of questions on the test. This essentially tells you 70% of what number (X) is 42. Divide 42 by .70 and you will get an answer of 60.