Question

Given that x : y = 13 : 15 and x + y =84. what is the value of x?

Answer 1

Answer:

39

Step-by-step explanation:

x : y = 13 : 15

= 13 + 15

= 28

x + y = 84

= 84 ÷ 28

= 3

x = 13 * 3

x = 39(Ans)

Answer 2

Answer:

$\frac{x}{y} = \frac{13}{15} \\ x + y = 84 \\ = \frac{84}{1} - \frac{13}{15} \\ = \frac{8 4\times 15 - (1 \times 13)}{15 } \\ = \frac{257}{15} \\ x = \frac{257}{15} \div \frac{2}{1} \\ = \frac{257}{15} \times \frac{1}{2} = \frac{257}{30 } \\ x = \frac{257}{30}$

Step-by-step explanation:

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