Question

Roma has 2 blue sticks and 5 red sticks. The length of 1 blue stick is 3 times that of the red stick. The total length of the 7 sticks is 127 cm. Find the length of 1 blue stick.​

Answer 1

Answer:

Let's assume that the length of red stick is R and

blue stick is B

according to the question

B = 3R and

2B + 5R = 127

Substituting B = 3R we get

6R + 5R = 127

11R = 127

R = 127/11 cm = 11.55 cm

and B = 3R = 38/11 = 34.63 cm

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