Comprehension Passage
Directions: Answer the questions based on the information given below.
The line chart given below shows the average number of computer mouses sold by five shopkeepers - V, W, X. Y, and Z. Each shopkeeper sold three different types of computer mouse - 'Wireless', 'Wired', and 'Bluetooth'. (As a multiple of '5' only)
Find the difference between the total number of 'Wireless' and 'Bluetooth' mouse sold by all five shopkeepers together and the total number of 'Wired' mouse sold by all five shopkeepers together?
1
850
2
860
3
870
4
880
5
890