Question

A car moves at a uniform speed of (x + 30) km/hr. Find the distance covered by the car in (y + 2)hours.

• A. $xy+2x+60y+30$
• B. $y^2+2x+30y+60$
• C. $xy+2x+30y+60$
• D. $x^2+2x+30y+60$

Answer 1

The correct option is C $xy+2x+30y+60$

Speed of the car $=(x+30)$ km/hr
Time $=(y+2)$ hours
Distance = Speed × time
$\Rightarrow (x+30)(y+2)$
$\Rightarrow x(y+2)+30(y+2)$
$\Rightarrow x\times y+x\times 2+30\times y+30\times 2$
$\Rightarrow xy+2x+30y+60$
$\therefore$ Distance covered is $xy+2x+30y+60$ km