On a farm, 2/7 of the coes were black, while the rest 49 were white. Find the total number of cows.
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Answered by
5
Correct Question :
- On a farm, 2/7 of the cows were black, while the rest 40 were white. Find the total number of cows.
Answer :
- Total number of cows = 56
Given :
- On a farm , 2/7 of the cows were black while 40 were white
To find :
- Total number of cows
Solution :
- Let the total number of cows be x
Given that , on a farm 2/7 of the cows were black then,
- 2x/7
Number of white cows = 40
According to question,
》2x/7 + 40 = x
》(2x + 280)/7 = x
》2x + 280 = 7x
》7x - 2x = 280
》5x = 280
》x = 280/5
》x = 56
Hence , Total number of cows = 56
Verification :
》2x/7 + 40 = x
》2(56)/7 + 40 = 56
》112/7 + 40 = 56
》16 + 40 = 56
》56 = 56
Hence , Verified.
Answered by
0
Answer:
56
Step-by-step explanation:
let the total no. of cows be x then,
total black cows will be 2x/7. now,
2x/7+40=x
(2x+280)/7=x
2x+280=7x
5x=280
x=56
hence , total cows are 56
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