A rope 64 m long is cut into 3 pieces. The second piece is 3 times as long as the first piece. The third piece is 4 times as long as the second piece. Find
the length of each piece of rope.

rope 1=4m ,rope2=12m ,rope3=48m

Step-by-step explanation:

let the first number be y .second be 3y.third be 4(3y).y+3y+4y=64

after adding use substitution.

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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35x 3= 105

step-by-step explanation:

35+35= 70   70 + 35= 105