Answer:
70 percent
Step-by-step explanation:
Lets assume initial cost price (CP) which is 100.
The profit (P) is 320 (320% of 100 is 320) understood?
Selling Price (SP) is CP +P. So SP must be 420
so basically Now CP increases by 25%. So new cost price (CP1) is 125.
SP remains constant at 420
New profit (P1) is SP - CP1 = 295
P1 as a percentage of SP is (295/420) x 100 = 70%
