Answer: a) Alex gets 10 counters out of 25, so the fraction of the counters he gets can be expressed as 10/25. To simplify this fraction, we can divide both the numerator and the denominator by their greatest common divisor, which is 5:
10/25 ÷ 5/5 = 2/5
So, Alex gets 2/5 of the 25 counters.
b) After giving 10 counters to Alex, Scott has 25 - 10 = 15 counters left. So, the fraction of the 25 counters that Scott has now can be expressed as 15/25:
15/25 ÷ 5/5 = 3/5
So, Scott now has 3/5 of the 25 counters.
Explanation: