Question

There are only red counters and blue counters in a bag

Answer 1

Answer:

$Red\ Fraction = \frac{5}{12}$

Step-by-step explanation:

Given

$Red:Blue = 5 : 7$

Required

Determine the fraction of red

To do this, we make use of:

$Red\ Fraction = \frac{Red}{Red + Blue}$

This gives:

$Red\ Fraction = \frac{5}{5+7}$

$Red\ Fraction = \frac{5}{12}$