How do you work this out?
The amount of hay in a barn will feed 40 cows for 12 weeks.
For how many weeks could you feed 15 cows with the same amount of hay?
For how many weeks could you feed 15 cows with the same amount of hay?
31-35, F
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It's simple..
(40*12)/15
32
(40*12)/15
32
summerlove · 31-35, F
@marcusaurelius It's an online practice quiz and the answer is 36. I don't know how to work it out though.
summerlove · 31-35, F
@marcusaurelius It's an online practice quiz. The answer is 36. I don't know how to work it out though.
@summerlove if a cow eats 'x' amount of hay per week.
Then total hay = 40 × 12 × X
On the other side, total hay is constant.. so,
480x = 15× x × y
Y (total no of weeks) = 480/15 = 32
Then total hay = 40 × 12 × X
On the other side, total hay is constant.. so,
480x = 15× x × y
Y (total no of weeks) = 480/15 = 32
SW-User
@marcusaurelius can you explain why you divided the whole thing by 15 please
@SW-User total hay is constant ..
Which means number of cows × number of weeks is constant
Which means number of cows × number of weeks is constant
summerlove · 31-35, F
@marcusaurelius I mean the answer is 32 lol. Sorry for the wrong answer and thank you for explaining it to me.
SW-User
@marcusaurelius oh, I get it, you divided the whole hey by 15 cows. Sorry for dumb Q, Im not good at math