Successive discount of 20% and 15% are equal to a single discount of----

Created: 7 years ago | Updated: 1 month ago

Updated: 1 month ago

30%

32%

34%

35%

বিসিএস প্রিলিমিনারি + রিটেন টেস্ট ২৯ তম বিসিএস প্রিলিমিনারি টেস্ট (14-08-2009) গণিত শতকরা (Percentage)

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Best Ans:

প্রশ্ন: Successive discount of 20% and 15% are equal to a single discount of----

Let, the selling price be TK. 100. After 20% discount, selling price = 100 - 100

$\times 20 % = 100 - 100 \times \frac{20}{100} = 100 - 20 = T K . 80 A g a i n, a f t e r 15 % d i s c o u n t, s e l l i n g p r i c e = 80 - 80 \times 15 % = 80 - 80 \times \frac{15}{100} = 80 - 12 = T K . 68 S o, t o t a l d i s c o u n t = 100 - 68 = T K . 32 T h a t m e a n s, t o t a l d i s c o u n t = 32 %$

7 years ago

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