Discussion

Explanation:

70% have VCD Players.

∴ 30% do not have VCD Players. 

75% have microwave ovens.

∴ 25% do not have microwave ovens.

80% have ACs.

∴ 20% do not have ACs.

85% have washing machines.

∴ 15% do not have washing machines.

∴ 30 + 25 + 15 + 20 = 90% of employees do not have at least 1 gadget.

∴ Minimum percentage of employees who has all the four gadgets

= 100 – 90 = 10%

Hence, option (c).


Alternatively,

Minimum percentage of employees which possess both VCDs and Microwaves

= 70% + 75% – 100%

= 45%

Minimum percentage of employees which possess both ACs and Washing machines

= 80% + 85% – 100%

= 65%

∴ Minimum percentage of employees which possess all the four gadgets

= 45% + 65% – 100%

= 10%

Hence, option (c).

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