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steposvetlana [31]
3 years ago
15

the average length of string a and string d is 10x cm . the average length of string b and string c is 8x cm . the average lengt

h of string b , c, d is 6x cm . find the length of string a is terms of x
Mathematics
1 answer:
klasskru [66]3 years ago
4 0

Answer:

a= 18x

Step-by-step explanation:

(a+d)/2 = 10x   (1)

(b +c)/2 = 8x  (2)

(b+c+d)/3 = 6x (3)

From the equation 2, we have (b+c)= 8x *2 = 16x

From the equation 3, we have d= 6x*3 - (b+c)= 18x- 16x = 2x

From the equation 1, we have a= 10x*2 -d= 20x - 2x= 18x

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