Question

On an occasion, 40% of the young men wear grey hats, 60% of the remaining young men wear black hats. What percentage of the young men wear neither grey hats not black hats? (No young man wear both grey hat and black hat)

Answer 1

Answer:

40% + 60% gives 100%

So, 0% young man are wearing grey and black hats

Answer 2

Answer:

24%

Step-by-step explanation:

let the number of young men be X

Gray = 40x/100 = 2x/5

Reaming = x-2x/5 = 3x/5

Black = 3x/×60/100 = 9x/25

Reaming = x-2x/5-9x/25

LCM OF 5 and 25 is 25

25x-10x-9x/25

=6x/25

multipling by 4

6×4/25×4

24/100

24%

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