Answer:
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Step-by-step explanation:
Given,
CP of cosmetics = Rs 360 per dozen
SP of a pair of cosmetics = Rs 80
We need to find the profit percentage.
Solution,
We know that,
1 dozen = 12 items
CP of 1 cosmetic = 360/12 = Rs 30
SP of 1 cosmetic = 80/2 = Rs 40
Profit = SP-CP
= Rs 40 - Rs 30
= Rs 10
Profit percentage is given by :

So, the profit percentage is 33.34%.
54c^3d^4 + 9c^4d^2
9c^3d^2(6d^2 + c)
For the first draw your probability is 3/14. Your second draw is 3/12.
Let me know if you have any other questions :)