Question

Please help me with these ​

Answer 1

Answer:

102.6 cm

Step-by-step explanation:

As we know that a line is divided into two parts

=> 2.5 : 1.3

Also lenght of smaller part is = 35.1

CLEARLY if => 1.3 = 35.1

then lenght of line is => 2.5+1.3 = 3.8 = ?

=> 3.8/1.3×35.1

=> 38/13×351/10

=> 13338/130

=> 102.6 cm long

Answer 2

Answer:

102.6

Step-by-step explanation:

let the common ratio between the line be x.

therefore the lines will be 2.5x and 1.3x respectively.

let the ratio be replaced by x as its unknown

= 2.5x and 1.3x

the full length ⇒2.5x + 1.3x = 3.8x

⇒1.3x = 35.1 cm

∴ x = \frac{35.1}{1.3}

1.3

35.1

(multiply by 10) = \frac{351}{13}

13

351

hence the lenght of the line ⇒ 27 ×3.8 = 102.6 cm [answer]

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