7. A herd of cows give 4/7 litres of milk each day. Each cow gives 1/3 of total milk every day. They give 24
litres of milk in six days. How many cows are there in the herd?
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3
Answer:
21
Step-by-step explanation:
Cows give milk a day = 4/7 litres
One cow gives 1/3 of total = 1/3*4/7= 4/21 litres a day
Cows give 24 litres in six days, then they give 24÷6= 4 litres a day
Number of cows= 4 ÷ 4/21 = 4*21/4= 21 cows
Answer: 21 cows
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