Question

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

Answer 1

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

now 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 = 381/11 = 34.63 cm

Answer 2

Hi friend!!

Given,

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

let length of red stick=x

length of blue stick=3x

Total length =2(3x)+5(x)=127

6x+5x=127

x=127/11
length of one blue stick= 3×127/11

=381/11cm

I hope this will help u ;)