SSC CHSL 15 Nov 2015 Shift 1 Paper

Question : 128 of 199

Marks: +1, -0

A Single discount equivalent to the series of discounts 20%, 10% and 5% is equal to:

Solution:

Let Marked price = Rs.100
After 1st discount of 20%, price =

100 − ( 20/100 × 100)

100 − 20 = 80

After 2nd discount of 10% (on changed price), selling price =

80 − (10 / 100 × 80)

80 − 8 = 72

After 3rd discount of 5% (onchanged price), selling price =

72 − (5/ 100 ×72)

72 − 3.6 = 68.4

∴ Net discount % =

(100−68.4)/100× 100 = 31.6%

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