Three successive discounts of 6%,10%,15% is equal to a single discount of:
25%
28.90%
28.09%
30%
Let Rs.100 be the price.Thesalepriceafter3successivediscounts=Price×(1–x/100)(1–y/100)(1–z/100)Here, x=6%, y=10% and z=15%.=100×[1–(6/100)]×[1–(10/100)]×[1–(15/100)]
=100×(94/100)×(90/100)×(85/100)
=71.91To get the require discount, we need to subtract 71.91 from 100, i.e.
100–71.91=28.09.Therefore, 3 successive discounts of 6%,10%,15% is equal to a single discount of 28.09%.