Oh, dude, like, 80 times 4 is 320. So, if you have 80 of something and you want to quadruple it, you end up with 320 of that thing. Math, man, it's wild.
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The question is easily answered using the calculator in your computer. But, since you are obviously not capable of doing so, the answer is 320.
4 x 20 = 80
To calculate 0.05 x 80, you simply multiply the two numbers together. 0.05 x 80 equals 4. This can be understood by recognizing that 0.05 is the same as 5% (5 divided by 100) and multiplying 5% of 80, which equals 4.
4 x 20 = 80 4 x 7 = 28 80 + 28 = 108 4 x 27 = 108
4 x 20 = 80 4 x 7 = 28 80 + 28 = 108 4 x 27 = 108
25% = 25/100 = 1/4 (1/4) X 80 = 80/4 = 20