The demand for the sale of fruits is increasing each year and is given by the relation: 3y = 420x
where,
y: Increase in demand (in tons)
x: Time (in years)
What is the rate of increase in the demand?

120

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140

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160

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180

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Solution

The correct option is B 140
Given,
3y = 420 $x$
$\Rightarrow y = \frac{420}{3} x$
$\Rightarrow y = 140 x$

On comparing the above equation with $y$ = m $x$
Rate of increase in demand
= Slope = m = 140 tons per year

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The demand for the sale of fruits is increasing each year and is given by the relation: 3y = 420x where, y: Increase in demand (in tons) x: Time (in years) What is the rate of increase in the demand?

The correct option is B 140Given, 3y = 420x ⇒y=4203x ⇒y=140x On comparing the above equation with y = mx Rate of increase in demand = Slope = m = 140 tons per year

The demand for the sale of fruits is increasing each year and is given by the relation: 3y = 420x
where,
y: Increase in demand (in tons)
x: Time (in years)
What is the rate of increase in the demand?

The correct option is B 140
Given,
3y = 420 $x$
$\Rightarrow y = \frac{420}{3} x$
$\Rightarrow y = 140 x$

On comparing the above equation with $y$ = m $x$
Rate of increase in demand
= Slope = m = 140 tons per year