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A is the correct answer because 90 minus 40 is 50 50 divided by 2 is 25
Answer:
2 x 2 x 2 x 5
Step-by-step explanation:
The first few prime numbers: {2, 3, 5, 7, 11, 13, 17, 19}
One way to start is to divide by the first prime until you can't do that any more, then try the next prime and so on until all the numbers in your list are prime.
40 = 2(20) divide 20 by 2 again
40 = 2(2)(10) divide 10 by 2 again
40 = 2(2)(2)(5) stop--all factors are prime.
It takes him 1 hour to read 30 pages so he’ll be reading 15 pages in 30 minutes so
17 pages in 34 minutes
