Question
Download Solution PDFP যদি Q থেকে 40% কম হয়, তাহলে Q হল P এর থেকে কত শতাংশ বেশি?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত:
P, Q থেকে 40% কম।
Shortcut Trick
40% = 2/5
সুতরাং, Q হল 2/(5-2) × 100 = 2/3 × 100 = 66.66% P থেকে বেশি।
∴ Q P এর চেয়ে 66.66% বেশি।
গণনা:
ধরুন, Q = 100y
সুতরাং, P = 100y × (100 - 40)/100 = 100y × 60/100 = 60y
এখন,
(Q – P)/P × 100 = 40y/60y × 100 = 66.66%
∴ Q P এর চেয়ে 66.66% বেশি।
Additional Information
A যদি B থেকে 20% কম হয়,
তাই,
B হল 20/(100 - 20) × 100 = 20/80 × 100 = 25% A এর থেকে বেশি
একইভাবে,
যদি B , A থেকে 25% বেশি হয়,
তাই,
A হল 25/(100 + 25) × 100 = 25/125 × 100 = 20% B থেকে কম।
Last updated on Jul 7, 2025
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