Question

13. After two successive discounts, a tie with a list price of Rs. 120 is available at Rs. 90. Il second
discount is 9 %, what is the first discount?​

Answer 1

Answer:

17.5833%

Step-by-step explanation:

second discount = 9%

so price b4 discount was

90/0.91(as 91 is 100-9)

= 98.90

This is (120-98.90) discount on 120

= 21.10

so %age discount is (21.10/120)*100

=21.10/1.2

=17.5833 %

Answer 2

The first discount is 17.582% approximately.

Step-by-step explanation:

Consider the provided information.

Let the first discount is x%.

Second discount is 9%. The marked price is Rs 120 and selling price is 90.

After getting second discount buyer need to pay 100-9=91%.

According to question.

91% of (100-x)% of 120 = 90

$\frac{91}{100}\times \frac{100-x}{100}\times 120 = 90$

$0.91\times (100-x)\times 1.20 = 90$

$100-x= \frac{90}{0.91\times1.20 }$

$100-x =82.4176$

$x \approx17.582$

Hence, the first discount is 17.582% approximately.

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