Question

Both the questions 4and5

Answer 1

the gain percent is 25% .for question no. 4

Answer 2

Q4. let the MP be x.
25% discount on MP
75% of MP
x × 75/100
=3x/4
CP = 3x/4
SP = x
gain = SP-CP
gain = x-3x/4
gain = x/4
gain % = gain/CP × 100
= x/4×4/3x×100
=33.33%