70 per cent of the employees in a multinational corporation have VCD players, 75 per cent have microwave ovens, 80 per cent have ACs and 85 per cent have washing machines. At least what percentage of employees has all four gadgets?

Options

A. 15
B. 5
C. 10
D. Cannot be determined

Answer

To solve the problem step by step, we will analyze the data provided and calculate the minimum percentage of employees that have all four gadgets.

### Step 1: Understand the given percentages
We are given the following percentages of employees who have specific gadgets:
- VCD players: 70%
- Microwave ovens: 75%
- ACs: 80%
- Washing machines: 85%

### Step 2: Calculate the percentages of employees who do not have each gadget
To find the percentage of employees who do not have each gadget, we subtract the percentage of employees who have the gadget from 100%.

- Percentage without VCD players = 100% - 70% = 30%
- Percentage without microwave ovens = 100% - 75% = 25%
- Percentage without ACs = 100% - 80% = 20%
- Percentage without washing machines = 100% - 85% = 15%

### Step 3: Total the percentages of employees who do not have each gadget
Now, we will add the percentages of employees who do not have each gadget:

Total percentage without at least one gadget =
30% (VCD) + 25% (Microwave) + 20% (AC) + 15% (Washing Machine) = 90%

### Step 4: Calculate the percentage of employees who have at least one gadget
Since we know that the total percentage of employees is 100%, we can find the percentage of employees who have at least one gadget by subtracting the total percentage of those who do not have any gadget from 100%.

Percentage with at least one gadget = 100% - 90% = 10%

### Step 5: Determine the minimum percentage of employees who have all four gadgets
The minimum percentage of employees who have all four gadgets is the percentage of employees who have at least one gadget. Since we have calculated that 10% of employees do not have any of the gadgets, this means that 10% of employees must have all four gadgets.

Thus, the minimum percentage of employees who have all four gadgets is **10%**.

### Final Answer
At least **10%** of employees have all four gadgets.

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