0.35
1/2
The LCM of 60 and 21 is 420
40% off = 60% 60% of 21 dollars = 21*60/100 = 12.60 dollars
60 - x = 3(34 - x) = 102 - 3x so 2x - 42, x = 21 so she was 60 - 21 ie 39 (and son was 13).
Well, darling, 21 goes into 60 a total of 2 times with a remainder of 18. So, if you're dividing 60 by 21, you'll get 2 with a little extra left over. Math can be a real party pooper sometimes, can't it?
0.35
21 percent onto 60 = 12.621% of 60= 21% * 60= 0.21 * 60= 12.6
1/2
35% of 60:= 35% * 60= 0.35 * 60= 21
The numbers are: 33 -7 times sq rt of 21 and 33 +7 times sq rt of 21
21 minutes 120 mph = 120 miles in 60 minutes = 2 miles in 1 minute 42 is 2 times 21 so 1 minute times 21 is 21 minutes
21/60 = 7/20
The LCM of 60 and 21 is 420
21/60 - 1/15 = 17/60 To subtract fractions, make them have the same denominator (bottom number) by converting them to equivalent fractions (usually with the lowest common multiple of the denominators) and then subtract the numerators (top numbers). So for 21/60 - 1/15: lcm(15, 60) = 60: 21/60 = 21/60 1/15 = 4/60 ⇒ 21/60 - 1/15 = 21/60 - 4/60 = 17/60
40% off = 60% 60% of 21 dollars = 21*60/100 = 12.60 dollars
The LCM of 21 and 60 is 420.420