An electric bus has onboard instruments that report the total electricity consumed since the start of the trip as well as the total distance covered. During a single day of operation, the bus travels on stretches M, N, O, and P, in that order. The cumulative distances traveled and the corresponding electricity consumption is shown in the table below. Stretch M 20 12 N 45 25 O 75 45 P 100 57 The stretch where the electricity consumption per km is minimum isCumulative distance(km) Electricity used (kWh)
P
Use differences between cumulative readings. The stretch rates are M: 12/20 = 0.60; N: 13/25 = 0.52; O: 20/30 ≈ 0.667; P: 12/25 = 0.48 kWh/km. P is the minimum.
Important Questions from Data Interpretation
The table shows the monthly expenditure of Saumya. What percent of her monthly salary is she able to save?
Expense Amount Food 5,000 Rent 20,000 Travel 10,000 Clothing 3,000 Miscellaneous 15,000 Savings 7,500 Following table provides figures (in rupees) on annual expenditure of a firm for two years – 2010 and 2011.
Category
2010
2011
Raw material
5200
6240
Power & fuel
7000
9450
Salary & wages
9000
12600
Plant & machinery
20000
25000
Advertising
15000
19500
Research & Development
22000
26400
In 2011, which of the following two categories have registered increase by same percentage?
The time spent to study history and chemistry is 4 hours 30 minutes. Then the student studied physics for
If the student studied chemistry for 3 hours, then he/she studied geography for
If the student studied 10 hours in a day, then he/she studied mathematics for
