Question

An electrician can be paid schemes as follows:
I. rupee $600$ and rupee $50$ per hour
II. rupee $170$ per hour
If the job take $n$ hours, for which values of $n$ does the scheme $I$ given the electrician better wages

• A. $n>5$
• B. $n>4$
• C. $n<5$
• D. $n<4$

Answer 1

Answer: (C)

Here, number of hours $=n$
For scheme I give the electrician better wages
$\Rightarrow 600+50n>170n$
$\Rightarrow 600>170n-50n$
$\Rightarrow 600>120n$
$\Rightarrow \frac{600}{120}>n$
$\Rightarrow 5>n$
$\Rightarrow n<5$
$\therefore$ For $n<5$, scheme I will give better wages to electrician.