40 + 80 = 120
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The highest common factor is the greatest number which both numbers can divide by evenly. In this case, the greatest number 40 can divide by is 40. 80 can also divide by 40, and so this is a common factor. As no numbers greater than 40 will be able to divide 40 evenly, the hcf of 40 and 80 is 40.
Oh, dude, like, seriously? Okay, let me break it down for you - if you take 80 and add 13 to it, you get 93. So, the number that is 13 more than 80 is 93. Math, am I right?
50% of 80 = 40 because 50% = 0.5 0.5 x 80 = 40 or you can divide 40 by 0.5 40/0.5 = 80
Well, honey, if you add 80 to 365, you get 445. So, there you have it, 445 is the number that's 80 more than 365. Math can be a real hoot sometimes, can't it?
Here's another way to ask the question: If you have a number and increase it by 40 percent you get 80. What is the number? Let x be the number you're looking for. Forty percent of the number can be expressed as 0.40x (because 40% = 0.40). The question said that x is increased by 40 percent, which implies addition, so the equation is x + 0.40x = 80 1.4x = 80 x = 80/1.4 = 57.14