The cost of 3 oranges and 12 apples is Rs 9.60 . When i purchased 5 oranges and 7 apple I gave Rs 6.90 . Find the cost of apples per dozen???
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Answered by
6
Answer:
Step-by-step explanation:
Let cp of 1 orange be x
And the cp of 1 apple be y
According to question
5x+3y=35 - - - - - (i)
2x + 4y=28 - - - - (ii)
Multiply by 2 in equation (i) and by 5 in equation (ii)
Now,
=> 10x+6y=70 - - - - (i)
=> 10x+20y=140 - - - (ii)
By subtraction equation (i) from (ii)
We get
=> 14y =70
=> Y= 10/14
=> Y=5
Putting the value of y in equation (i)
=> 5x+(3*5)=35
=> 5x =35-15
=> X =20/5
=> X =4
Hence
The cost of an orange =₹4
And the cost of an apple = ₹5
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Answered by
0
Answer:
Step-by-step explanation:
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