Question

thirty articles are bought at rs450 each if one-third of these articles be sold at 6% loss; at what price must each of the remaining articles be sold in order to make of profit of 10% on the whole

Answer 1

CP OF ONE ARTICLE=450
i.e. CP OF 10 ARTICLES=450x10=4500
TOTAL LOSS=4500x6/100=270
CP OF 30 ARTICLES=450x30=13500
REQUIRED NET PROFIT=13500x10/100=1350
i.e. TOTAL PROFIT REQUIRED=1350+270=1620
CP OF THE REMAINING 20 ARTICLES=450x20=9000
i.e. SP OF THE REMAINING 20 ARTICLES=9000+1620=10620
i.e. SP OF ONE ARTICLE=10620/20=531