It is: 6.5/2 = 3.25
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the half of 130 is 65
1 % = 130 half is 65 130 + 65 = 195 13,000 x 0.015 = 195
65*39 = 65*(40-1) = 65*40 - 65*1 = 2600 - 65 = 2535 To calculate 65*40 in your head, you can try 6.5 is half of 13 ie 6.5*2 = 13 so 65*2 = 130 so 65*4 = 260 and so 65*40 = 2600
68
219 / 65 = 3,37 hours = 3 hours 22 minutes and a few seconds.Three and a half hours