Question

19. Ifx: y = 3:4, the value of x2y + xy2 : x3+ y3 is
(a) 13:12
(b) 12:13
(c) 21:31
(d) none of these​

Answer 1

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Answer:

Here, it is given that

x:y=3:4

We have to find the value of x²y+xy²: x³+y³

So,

x²y+xy² : x³+y³

(3)²(4)+(3)(4)² : (3)³+(4)³

9×4+3×16 : 27+64

36+48 : 91

84 : 91

Simplifying 84:91(Dividing by 7),

=>12:13

Hence, the correct answer is Option B.

Answer 2

hope it helps............