Question

output increased from 5 unit to 6 unit as a result total cost rise from 30 to 45 find out the marginal cost​

Answer 1

MC=TCn-TCn-1

then,45-30=15.MC=15

Answer 2

Marginal Cost =TCn - TCn-1  (or) TC/Q

output(units)      TC      MC

    5                    30       30

    6                    45        15  

Therefore, MC of 5th units is 30 & 6th unit is 15