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ladessa [460]
3 years ago
7

There are five more chickens than rabbits in a backyard. The total number of legs are 130. How many chickens and rabbits?

Mathematics
1 answer:
bulgar [2K]3 years ago
3 0
A) c = r +5B) 2*c + 4 * r = 130
Substituting A) into B)B) 2 * (r + 5) + 4 * r = 130B) 2 * r  + 10 + 4 * r = 130B) 6r = 12020 rabbits and therefore 25 chickens
Double-Check
2 * 25 + 4 * 20 = 130 total legs



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It takes 22 hours for a hosepipe with a flow of 12 litres per minute to fill a swimming pool. How long will it take if its flow
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Answer:

t2 = 52.8 hours

it will take 52.8 hours if its flow is reduced to 5 litres per minute.

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The volume of the swimming pool can be written as;

Volume V = flow rate × time

V = R×t

V = R1×t1 = R2×t2

R1×t1 = R2×t2

t2 = R1×t1/R2 ........1

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