Question
Download Solution PDFराम को अपनी राशि की 12\(\frac{1}{2}\)% हानि होती है और शेष का 75% खर्च करने के बाद, उसके पास 630 रुपये बचते हैं। राम के पास प्रारंभ में कितनी राशि थी?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया है:
राम को अपनी राशि की 12\(\frac{1}{2}\)% हानि होती है और शेष का 75% खर्च करने के बाद, उसके पास 630 रुपये बचते हैं।
गणना:
माना राम के पास प्रारंभ में 100 रुपये हैं।
100a × 12\(\frac{1}{2}\)%
⇒ 12\(\frac{1}{2}\)a
इसलिए,
शेष राशि = 100a - 12.5a
⇒ 87.5a रुपये
87.5a × 25/100 = 630 रुपये
⇒ 87.5a = 630 × 4
⇒ 87.5a = 2520
⇒ a = 2520/87.5
⇒ a = 28.8
इसलिए, 100a = 2880
∴ सही उत्तर 2880 रुपये है।
Shortcut Trick
हम जानते हैं, 12 \(\frac{1}{2}\) % = 1/8 और 75% = 3/4,
इसलिए, 7 इकाई → 630,
तो, 32 इकाई → 630/7 × 32 = 2880 रुपये
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