70% of the employees in a multinational corporation have VCD players, 75 percent have microwave ...
70% of the employees in a multinational corporation have VCD players, 75 percent have microwave ovens, 80 percent have ACs and 90 percent have washing machines. At least what percentage of employees has all four gadgets?
Answer/Solution
(a) 15%
Steps/Work
so 30% employees don't have VCD devices.
25% employees don't have MO
20% employees don't have ACs
10% employees don't have WM
Summ of employees that don't have some device = 30%+25%+20%+10% = 85% < 100%
So definitely at least 15% employees have 4 devices.
ans: A
25% employees don't have MO
20% employees don't have ACs
10% employees don't have WM
Summ of employees that don't have some device = 30%+25%+20%+10% = 85% < 100%
So definitely at least 15% employees have 4 devices.
ans: A