Question

If a:b=3:7, find the value of (5a+b):(4a+5b)​

Answer 1

Answer:

let a= 3x and b= 7x

( 5a + b) : (4a +5b )

= [ 5(3x) + 7x ] : [ 4(3x) + 5(7x) ]

= ( 15x +7x) : ( 12x + 35x )

= 22x : 47x

= 22:47

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Answer 2

Answer:

22/47

Step-by-step explanation:

a:b=3:7

=> a = 3x , b= 7x

(5a+b):(4a+5b)

(5× 3x + 7x) : (4×3x + 5×7x)

( 15x +7x ) : ( 12x + 35x )

22x : 47x

= 22 : 47

= 22/47

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