7200
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93 x 90 x 90 x 80= 8370 x 90 x 80= 753,300 x 80= 60,264,000The answer is 60,264,000.
90% of 80 right means 10% of 80 wrong, which means 10/100 x 80 = 1/10 x 80 = 1/1 x 8 = 8 questions wrong.
90% of 10 = 0.90 x 10 = 980% of 90% of 10 = 0.80 x 9 = 7.2
5 No, this is the highest common factor! 90 = 2 x 3 x 3 x 5; 80 = 2 x 2 x 2 x 2 x 5, 75 = 3 x 5 x 5 LCM = 90 x 8 x 5 ie 3600
Usually, when the word "of" appears, it means to multiply. 25 percent of 80 = 0.25 x 80 = 20 2/3 of 90 = 2/3 x 90 = 60 It works in reverse by dividing. What fraction of 90 is 60? 60/90 = 2/3 What percent of 80 is 20? 20/80 = 0.25