Math, asked by kanishk72, 11 months ago

if one side of a triangle is one third of the perimeter ,the second side is one fifth of the perimeter ,and the third side is 7 metres ,what is the perimeter of triangle​

Answers

Answered by praveenaINDIAN
16

Answer:

15

Step-by-step explanation:

Let the perimeter of triangle =x

 \frac{1}{3} x +  \frac{1}{5} x + 7 = x

 \frac{x}{3}  +  \frac{x}{5}  + 7 = x

 \frac{5x + 3x + 105}{15}  = x  \\ 8x + 105 = 15x \\ 105 = 15x - 8x \\ 7x = 105 \\ x =  \frac{105}{7}  \\ x = 15

Answered by shoshilkumar
1

Answer:

Perimeter=15

Step-by-step explanation:

Let the perimeter be X

according to question

X= X/3 + X/5+7

X=5x+3x+105/15

15x=8x+105

15x-8p=105

7x=105

X=105÷7

X=15

Hence,the perimeter of the triangle is 15m

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