Comprehension Passage
Directions: Study the following information carefully and answer the questions.
The below bar chart shows the total number of notes and number of ruled notes sold in five different branches of a store.
Note: Total number of notes sold = Number ruled notes sold + Number of unruled notes sold
If the average of unruled notes sold in the branches A, B and C together is X and the average of ruled notes sold in all branches B, C and D together is Y, then find the value of 7(Y – X).
1
135
2
115
3
175
4
150
5
125