explain the shortcut for 12 1/2 of 14 1/2+12 1/2 =?
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Answered by
2
Step-by-step explanation:
12 1/2 * 14 1/2 + 12 1/2
= 25/2 * 29/2 + 25/2
= 25/2*(29/2 + 1)
= 25/2 * 31/2
= 775/4
= 193.75
Answered by
0
12 1/2 =( 12*2 + 1) / 2
=25 / 2
14 1/2 =( 14*2 + 1) / 2
=29 / 2
12 1/2 + 14 1/2 = 25/2 + 29/2 =54/2 = 27
Now 12 1/2 of
12 1/2 + 14 1/2 = 25 / 2 of 27
= 25 /2 * 27 =25*27/2
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