Tina feeds her birds exactly 1 5/6 small measuring cups of bird feed each time she feeds them. If she has to feed them exactly 27 ½ cups so far, how many times has she given food to the birds?
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28 6/8 times
29 ⅓ times
15 times
50 5/12 times
To determine how many times Tina has fed the birds, we need to divide the total cups of bird feed by the amount she feeds them each time.
1 5/6 can be converted to an improper fraction by multiplying 1 by 6, then adding 5, which equals 6 + 5 = 11. So, 1 5/6 is equal to 11/6.
To determine how many times Tina has fed the birds, we divide 27 ½ by 11/6.
Dividing 27 ½ by 11/6 is the same as multiplying 27 ½ by the reciprocal of 11/6.
Reciprocal of 11/6 = 6/11.
27 ½ * (6/11) = (27 ½) * (6/11) = (55/2) * (6/11) = 55 * 6 / 2 * 11 = 330/22 = 15
Therefore, Tina has fed the birds 15 times.
So the answer is 15 times.