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Earn +20 ptsQ: What is 18 over 21 times 15?
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What is 8 over 9 times 15 over 28 times 21 over 25?
8/9 × 15/28 × 21/25 = (8×15×21)/(9×28×25) = 2520/6300 = (2×1260)/(5×1260) = 2/5
How many times does 18 go into 21?
Once, with three left over.
What is the average of 21 18 15?
It is: 21+18+15 = 54 and 54/3 = 18 which is the mean average
What times 21 equals 315?
315/21 = 15, hence 15 times 21 is 315
What is the mean of the numbers 15 and 21 (not including 15 and 21)?
18
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