Answer:
5 hrs 19.57 Minutes will be taken to prepare 1575 Bags by Ashley & her 4 friends if Ashley take 2/3 minute to prepare a bag & her each friend takes 75% Longer 
Explanation:
Ashley Takes 2/3 minute to prepare a bag 
 
=> ashley prepare bag in 1 minute = 3/2 
 
Her friends takes 75% Longer to prepare a bag 
 
time taken by her friends = 2/3 + (75/100)(2/3) 
 
= (2/3)( 1 + 3/4) 
 
= (2/3)(7/4) 
 
= 7/6 Minutes 
 
Her one friend prepare bag in 1 minute = 6/7 
 
Bag prepared by Ashley & her 4 friend in 1 Minute 
 
= 3/2 + 4*6/7 
 
= (21 + 48)/14 
 
= 69/14 Bag 
 
69/14 Bag prepared in 1 minute 
 
1 Bag prepared in 14/69 minutes 
 
1575 bags prepared in 1575 * 14/69 
 
= 319.57 minutes 
 
= 5 hrs 19.57 Minutes