SSC CHSL 10 Jan 2017 Shift 2 Paper

Question : 94 of 100

Marks: +1, -0

When a discount of 20% is given on an African safari ticket, the profit is 43%. If the discount is 28%, then the profit is

Solution:

Let marked price = Rs. 100

x

After 20% discount, selling price =

{100−20}/100

×100x=RS.80x

Let Cost price = Rs.

y

⇒ Profit % =

{80x−y}/y×100=43

⇒

{80x−y}/y=43/100

⇒

8000x − 100y = 43y

⇒

y={ 8000x}/143≈Rs.56x

If, discount = 28%, ⇒ Selling price =

{100−28}/100= Rs.72x

∴ Profit % =

{72x−56x}/{56x}×100=≈28.7%

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