Math problem

<p>Hi All. </p>

<p>Please help me solve this problem:<br>
28 buckets of food can feed 4 sheep for 7 days. How long would 20 buckets of food last 5 sheep? </p>

<p>Thank you.</p>

<p>28/4/7 = 20/5/x
7/7 = 4/x
1 = 4/x
x = 4</p>

<p>So it would last 4 days. Alternatively, 28 buckets for 7 days means 4 buckets a day. 4 buckets for 4 sheep so one sheep needs one bucket every day. So the 5 sheep will eat 5 buckets every day, so 20 buckets will last 4 days. </p>

<p>Thank you so much</p>