Answer:Total amount contributed by principal = 4×128 = $512
Explanation:
In 4 weeks, the school raised $2560 for a health and fitness awareness students collected donations in 5 days each week. Total number of days for which collection was made
= 5×4 = 20 days
The principal agreed to make one donation that was the same as the amount collected in a day each week. Let amount per day be x since all days are of equal amount, this means
A week = 5x
4weeks = 20x
20x = 2560
x = $128
The principal contributed $128 in each week
Total amount contributed by principal = 4×128 = $512