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What numbers do you multiply to get 900?
90x10=900
90 is 10 percent of what number?
90 is 10% of 900. 90x10=900
60 x 15?
900. I noticed that if you divided 60 by two, and multiplied 15 by two, you would get 30 on both accounts. You could go even simplier and times 30 by 3, and divide 30 by three, which would make the equation 90x10. Soooo simple, but I knew that 3x3 equals 9, so I knew that the first part of the answer was 9, then I added the two left over noughts to the answer, which means I got 900. NOTE: The adding the zeros to the end of the answer ONLY works if both of the numbers you need to multiply have a zero in the one's column.
30 percent of what number is 90?
Oh, dude, let me break it down for you. So, like, if you want to find out what number represents 30% of another number that equals 90, you just divide 90 by 0.3 (which is 30% as a decimal). That gives you a number that is technically correct. But, like, who really cares about math when you can just ask a calculator, am I right?
