Q. 6 B3.9( 31 Votes )

# Let us construct

We know that

price = quantity of sugar in kg X rate per kg

Let the quantity be x.

Price for x kg of sugar = Rs 80

therefore,

According to question,

For the same price, Quantity has increased by 4kgs and rate has decreased by 1 .

As, price = quantity of sugar in kg × rate per kg

So,

Hence the required quadratic equation is

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