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p = 11 [4/5]

Step-by-step explanation:

 from the question

L = 2(1/2)  and  W = 3 (2/5)

we should solve  for p  when p =  2L + 2W

so from the expression

P = 2 ( 2 1/2) + 2 ( 3 2/5)

P = 2 ( 5/2) + 2 ( 17/5)

P = 5 + 34/5

Find the lowest common multiple (L.C.M.)

P = [25 + 34]/5

P = 59/5

P = 11 4/5

therefore the answer to the question p =  2L + 2W  is

P = 11 4/5 .

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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