Question

Q 41 Ifm : n = 5 : 9, then find the value of (7m + 3n): (3m + 7n).
Ops: A
0 31/39
O 75/79
0 121/117
U o
o 31/25​

Answer 1

Answer:

31/39

Step-by-step explanation:

$\frac{m}{n} = \frac{5}{9} \\ \frac{7m + 3n}{3m + 7n} \\ = \frac{n(7 \frac{m}{n} + 3) }{n(3 \frac{m}{n} + 7)} \\ = \frac{7 \times \frac{5}{9} + 3 }{3 \times \frac{5}{9} + 7 } \\ \frac{ \frac{35}{9} + 3 }{ \frac{15}{9} + 7 } \\ = \frac{35 + 27}{15 + 63} \\ = \frac{62}{78} \\ = \frac{31}{39}$

Answer 2

Answer:

31/39 is answer.

Step-by-step explanation:

Hope it helps!