Question

a manufacturing cost marker is 30 rs if the first marker sold in 3rs second marker is sold in 6 rs and third marker is sold in rs 9 and so on find the minimum nber of markers that must be sold to be gain 50 percent overall

Answer 1

not sure but answer might be 29

Answer 2

Answer:29

Step-by-step explanation:

Cost price =30

For a gain of 50%

Selling price = 45

3, 6, 9, ........ is in A.P

To get a profit of 50% , we need to make the average of this A.P series into 45

Average of A.P series = (First term + Last term)/2

45 = (3 + x)/2

x = 90 - 3 = 87

so Last term of the A.P is 87

Number of terms = (87 - 3)/3 + 1 = 28 + 1 = 29