Q.

A cottage industry produces a certain number of  toys in a day. The cost of production of  each toy (in rupees) was found to be 55 minus the number particles produced in a day . On a  particular day, the cost of production was 750.If  x denotes the number of toys produced that day, find the quadratic equation to find x.


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a

x2-55x+750=0

b

x2+55x-750=0

c

x2-51x+750=0

d

x2+55x+750=0  

answer is A.

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Detailed Solution

Cost of  production of each toy =55-x
let us consider number of toy produced each day = x
cost of production on a particular day
x(55-x)= 750
55x-x2=750
x2-55x+750=0
Hence the required quadratic equation to find x is x2-55x+750=0.
 Exam  Type: CBSE
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