tion 19 et ered ed out of ag tion In a market research it is found that 6/15 people purchase HP laptop, 5/15 people purchase Dell laptops and the rest of the people purchase Zenith laptops. How many Zenith laptops are sold if the total sale is 21,240 mobile phones? a. 8,496 b. 7,080 c. 4,248 d. 5,664