JEE Main 2015 · 10 Apr · Shift 1 · Mathematics Q87

← JEE Main 2015 · 10 Apr · Shift 1

MathematicsSingle correct+4 / -1Question 87 of 90

A factory is operating in two shifts, day and night, with 70 and 30 workers respectively. If per day mean wage of the day shift workers is ₹ 54 and per day mean wage of all the workers is ₹ 60, then per day mean wage of the night shift workers (in ₹) is :

Answer and worked solution

Official answer: C

$100\times60=70\times54+30\bar x$ , so $\bar x=\frac{6000-3780}{30}=74$ .

Topics:Measures of central tendency

← Previous question Next question →

JEE Main 2015 · 10 Apr · Shift 1, Mathematics question 87