Question
The cost of booking a bus consists of a fixed charge and
a variable charge per seat. When 75 seats are booked, the average cost per seat is Rs. 36. However, if 90 seats are booked, the average cost per seat decreases to Rs. 35. Determine the average cost per seat when 100 seats are booked.Solution
Let the fixed cost of booking be Rs. 'F' and variable cost be Rs. 'V'. F + (V X 75) = 36 X 75 Or, F + 75V = 2700 .......... (I) Also, F + (V X 90) = 35 X 90 Or, F + 90V = 3150 ........ (II) On subtracting equation (I) from equation (II) , we have; 15V = 450 Or, 'V' = 30 On putting 'V' = 30 in equation (I) , we have; F + (75 X 30) = 2700 Or, F = 2700 - 2250 Or, 'F' = 450 So, average fare when 100 seats are booked: = {450 + (100 X 30) } ÷ 100 = (3450/100) = Rs. 34.5
If A and B sold red pens in pack of 10 and 7 respectively, then find the sum of number of packs of red pens sold by them.
The number of participants in painting competition is approximately what per cent of the number of participants in recitation?
Find the difference between the number of bags sold by shop A throughout the week and the number of bags sold by shop C throughout the week.
What is the ratio between numbers of automatic cars sold to manual cars sold in city B?
What is the difference ( in thousand) between the number of vehicles sold by Company O in the year 2011 and in the year 2014?
What is the ratio of the cost of flooring to that of fencing of field S?
Number of employees in company D is approximately how much percent less than the number of employees in company B?
Find the ratio of m:g.
Ratio of price of Black pen and Red pen is 9:5 for shopkeeper A. Total amount received after selling both pens is Rs.800. Price of Red pens sold by D is...
If 20% of students disqualified for the exam from city A in 2018 and 26% from city D in 2019, then how many students had been disqualified for the exam ...
