Shilpa bought 30 T-shirt at a clothing store. 20% of the t-shirt were blue and 1/2 of the t-shirts were black. Howmany of the t-shirts were neither black nor white?

The number of T-shirt bought by Shilpa from a clothing store = 30

Percentage of T-shirt that were blue = 20%

Then Number of T-shirt that were blue in color = (20/100) * 30

= 2 * 3

= 6

Number of T-shirts that were black in color = (1/2) * 30

= 15

Then

The total number of T-shirts that were black and blue = (15 + 6)

= 21

Then

The total number of T-shirts that were neither black nor blue = 30 - 21

= 9

So the number of T-shirts that were neither black nor blue was 9.