Directions : Given graph shows the number of orders received and cancelled on…
2019
Directions : Given graph shows the number of orders received and cancelled on particular days of a week (From Monday to Saturday) while the table shows the number of orders which were not delivered. Read the data carefully and answer the questions.
(NOTE: Refer Y-Axis values as number of orders while X-Axis values as Days i.e. 20 = Monday, 40 = Tuesday and so on)
(Orders continued/booked are those which are not cancelled)
Some data is missing in the given graph.
Orders Booked = Orders Received – Orders Cancelled
Orders Delivered = Orders Booked – Orders not delivered
What is the difference between number of orders delivered on Monday & Wednesday together and number of orders booked on Wednesday & Thursday together?
- A.
300
- B.
280
- C.
320
- D.
240
- E.
260
Show answer & explanation
Correct answer: D
Concept
In this order-tracking data set the three quantities chain together through fixed definitions: Orders Booked = Orders Received − Orders Cancelled, and Orders Delivered = Orders Booked − Orders not delivered.
So a delivered figure needs all three inputs (received, cancelled and not-delivered), while a booked figure needs only received and cancelled. Always read each value off the marker for the correct day before applying the chain.
Reading the data
Using the axis key 20 = Monday, 40 = Tuesday, 60 = Wednesday, 80 = Thursday, the values needed here are:
Day | Received | Cancelled | Not delivered |
|---|---|---|---|
Monday | 600 | 200 | 120 |
Wednesday | 500 | 200 | 160 |
Thursday | 600 | 240 | 300 |
Application
Monday delivered = 600 − 200 − 120 = 280.
Wednesday delivered = 500 − 200 − 160 = 140.
Delivered on Monday and Wednesday together = 280 + 140 = 420.
Wednesday booked = 500 − 200 = 300.
Thursday booked = 600 − 240 = 360.
Booked on Wednesday and Thursday together = 300 + 360 = 660.
Required difference = | 420 − 660 | = 240.
Cross-check
The two totals come from different chains: the delivered total also subtracts the not-delivered column (120 and 160), whereas the booked total does not, which is why the booked pair (660) is the larger. Their gap, 240, is the required difference.