Question

1. 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 of toys produced in a day. On a particular day, the total cost of production was ₹750. We would like to find out the number of toys produced on that day.

plz answer this question guys...... its urgent.....​

Answer 1

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A shopkeeper buys a certain no. of books for Rs. 960. If the cost per book was Rs. 8 less, the no. of books that could be bought for Rs. 960 would be 4 more. Taking the original cost of each book to be Rs. x, write an equation in x and solve it.

Let orignal cost of each book =x

No. of books bought for Rs. 960 =

x

960

The cost of each book was Rs. 8 less, then the cost of book =x−8

Difference in the no. of books bought =

x−8

960

−

x

960

=4

x−8

240

−

x

240

=1

240x−240(x−8)=x(x−8)

x

2

−8x−1920=0

x

2

−48x+40x−1920=0

x(x−48)+40(x−48)=0

(x+40)(x−48)=0

x=−40(impossible)and x=48

Orignal cost of each book is 48

Option A is correct.