Question

It is urgent so please give me right ans only. I'll mark u as brainlist .



















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Answer 1

Step-by-step explanation:

a) Given time is constant so

8:10 : : 4:x

8/10=4/x

2/10=1/x

x=5

b) Given number of cows is constant

15:72 : : 4:x

15/72=4/x

5/24=4/x

x=4×24/5

x=19.2