Answer:
Fred scored 100
Bob scored 50
Gladys scored 20
Step-by-step explanation:
Fred = 50% * 200
= 50/100 * 200
= 0.5 * 200
= 100
Bob = 25% * 200
= 25/100 * 200
= 0.25 * 200
= 50
Gladys = 10% * 200
= 10/100 * 200
= 0.1 * 200
= 20