Math
posted by Jim on .
A farmer planted a field of BT 124 corn and wants to estimate the yield in terms of bushels per acre. He counts 22 ears in 1/1000 of an acre and determines that each ear has about 700 kernels on average. He also knows that a bushel contains about 90,000 kernels on average. What is the farmerâ€™s estimate of yield in bushels/acre?
I tried this but i'm not sure of my answer
1 acre = 22 ears
1 ear = 700 kernels
Therefore, 22 ears = 700 kernels * 22 = 15400kernels
1 Bushel = 90,000 kernels
Therefore, 15400 kernels = 90,000/15400 = 0.17 bushel/acre

If he gets less than 1/4 bushel per acre, he'd better give up farming and find a new profession.
22 * 1000 = 22,000 ears per acre
22,000 * 700 = 15,400,000 kernels
15,400,000 / 90,000 =
http://www.google.com/search?source=ig&hl=en&rlz=1G1GGLQ_ENUS308&q=15%2C400%2C000+%2F+90%2C000+&aq=f&aqi=h1&aql=&oq=&gs_rfai=Cb4zaoUaETM3lKo7EM4SYqbgGAAAAqgQFT9ByqaU 
.17 bushel/acre ?
Does that seem logical to you?
1 acre yields 20 000 ears
= 20 000*700 kernels
1 bushel = 90 000 kernels
number of bushels = 20 000*700/90 000
= 155.56 or appr. 156 bushels/acre 
sorry, I read that as 20 ears, should have been 22
so go with Ms Sue's final calculation of
15,400,000 / 90,000 = appr. 171