On a playground, there is a number of children, out of which 1/4 wear red t-shirts, 1/20 wear blue t-shirts, and the remaining 14 children wear white t-shirts. How many children wear blue t-shirts?
Pick one: A) 6 B) 20 C) 1 D) 3 E) 5
Let x be the number of children on the playground.   x/4+x/20=6x/20=3x/10 is the number of children who wear red and blue t-shirts   The number of the children who wear white t-shirts is x-3x/10=7x/10. Thus,   7x/10=14 implies x=20.   1/20*20= 
<gadget id="calculator">1/20*20</gadget>
<output>1</output>
1. Hence, only 1 child wears a white t-shirt.   Answer 1 1
<result>C</result>
On a playground, there is a number of children, out of which 1/4 wear red t-shirts, 1/20 wear blue t-shirts, and the remaining 14 children wear white t-shirts. How many children wear blue t-shirts?