This is a question from an exercise book. the explanation was really confusing (and long), so I thought maybe someone could offer some shortcut version.
A farm has a piece of land that has grass growing at an even speed. The land can sustain 27 cows for 6 weeks and 23 cows for 9 weeks. How many weeks can the land sustain 21 cows?
7 weeks
8 weeks
12 weeks
18 weeks
24 weeks
[spoiler]The solution says it's similar to a works problem but with changing workload, and breaks the steps down to finding initial grass and new growing grass and has a total of 3 steps.. Wondering if there's a shorter way.
OA is 12 weeks. [/spoiler]
A farm has a piece of land that has grass growing at an even speed. The land can sustain 27 cows for 6 weeks and 23 cows for 9 weeks. How many weeks can the land sustain 21 cows?
7 weeks
8 weeks
12 weeks
18 weeks
24 weeks
[spoiler]The solution says it's similar to a works problem but with changing workload, and breaks the steps down to finding initial grass and new growing grass and has a total of 3 steps.. Wondering if there's a shorter way.
OA is 12 weeks. [/spoiler]
