Next time you ask a question like this, try doing 1/4 and flour is a cooking ingredient, not a plant. :) the answer is 1 and 1/4 cup.
1/4+3/4=1
1/4+1=1 1/4
the gender of the kids does not matter so it can be discarded.
you add up how many boys and girls in the class to make a total of 50 kids
your 100% is 50
meaning 40% of 50 is 20
so if 20 kids took the bus to school then 30 did not take the bus.
Answer- 120
Solution-
There are digits to be arranged,they are {3,3,2,3,4,5}. And from those ,3 digits are repeated .
so the total number of distinct number that can be formed = 
= 
= <em>120</em><em> </em>(ans)
X is pretzels and y is hot dogs
3x + 2y=195
x +15 =y
3x + 2(x+15)=195
5x=165
x=33
D
