If the cost of 5 pens is
equal to selling price of 4
pen of same kind, find profit
percentage.

here your answer

Step-by-step explanation:

let cp of one pen be x

cp of 5 pen = 5x

cp of 5 pen = sp of 4 pen

5x = sp of 4 pen

4x = cp of 4 pen ( cp of 1 pen = x)

profit = 5x-4x

= x

profit % = profit / cp ×100 = x/4x × 100

= 25 %

answer: he is 272195

step-by-step explanation: all you have to do is multiple 3535 and 77 and it equals 272195

thus, the first answer choice, y = sec x, is the correct one