GATE EC 2015 Set 2 — Question 4
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General Aptitude → Quantitative Aptitude → Data Interpretation (Bar, Pie, Graphs, Tables)
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Question
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 travelled and the corresponding electricity consumption are shown in the Table below:
The stretch where the electricity consumption per km is minimum is
| Stretch | Cumulative distance (km) | Electricity used (kWh) |
|---|---|---|
| M | 20 | 12 |
| N | 45 | 25 |
| O | 75 | 45 |
| P | 100 | 57 |
Correct answer
(D) P
Solution
To find the electricity consumption per km for each stretch, we calculate the distance and electricity used for each individual stretch from the cumulative data provided:
- Stretch M: Distance = , Electricity = . Consumption = .
- Stretch N: Distance = , Electricity = . Consumption = .
- Stretch O: Distance = , Electricity = . Consumption = .
- Stretch P: Distance = , Electricity = . Consumption = .
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