Bell+Ringers

Bell Ringer 1. 7 cows can eat 3 acres of grass of a certain grassland in 30 days, and 5 cows can eat 2 acres of grass of that grassland in 10 days.

The grass grows at a constant rate and each cow eats at a constant rate. The length of the grass before the cows start grazing is constant.

Determine the time it will take for 16 cows to eat 7 acres of grass of the grassland.

__//**7cows * 30days = 3acres * i(initial amount of grass) + 3acres * 30days * g(grass growth) **//__ __//**and... **//__ __//**5cows * 10days = 2acres * i + 2acres * 10days * g **//__ __//**so... **//__ __//**210=3i + 90g **//__ __//**50=2i + 20g **//__

__//**6i + 180g - 420 = 6i + 60g - 150 **//__ __//**120g = 270 **//__ __//**g = 9/4 **//__ __//**i = 5/2 **//__

__//**16cows * n(number of days) = 7acres * 5/2 + 7acres * n * 9/4 **//__ __//**16n = 35/2 + 63n/4 **//__ __//**n = 70 **//__

__//**So the answer is 70 days. **//__ __//**Credit Of Answer Goes To: **//__

<span style="color: #00ffff; font-family: 'Arial Black',Gadget,sans-serif; font-size: 250%; line-height: normal;">Professor Templation
<span style="font-family: 'Arial Black',Gadget,sans-serif; font-size: 200%;">Bell Ringer No.2

Zebras are odd-toed ungulates of the Equidae family native to eastern, southern and southwestern Africa. They are best known for their distinctive, which come in different They are generally animals and can be seen in small harems to large

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