−2 1/2 ÷ 6 a. −2 1/6 b. −5 1/2 c. 5 1/2 d. 2 1/6

the answer is -  

given - 2 ÷

change the mixed number to an improper fraction

- 2 = -

• leave the first fraction

• change division to multiplication

• turn the second fraction upside down

- × = - = -

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

happy to

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