बिक्री के समय किसी दुकानदार ने अपनी वस्तुओं के मूल्य को सूची मूल्य से 50 % कम कर दिया , जो कि पहले नकदी के लिए 10 % बढ़ा देने पर भी विक्रय मूल्य पर 25 % लाभ कमाने के लिए निश्चित किया गया था । अब वह बट्टा नहीं देता है । उसके लाभ अथवा हानि का प्रतिशत होगा :
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Frictional Force: Friction is a force exerted by a surface against the motion of a body across its surface. ...
Applied Force: Force which is applied to an object by another object. ...
Normal Force: The normal force is also called Support force.
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Answer:
The obtained marks by 15 students arranging in ascending order,
03,07,08,09,11,11,12,13,14,16,17,19,20,23,24
(i) Mean=
15
03+07+08+09+11+11+12+13+14+16+17+19+20+23+24
=
15
207
=13.8
(ii) The new marks after increasing each student mark by 4 are,
07,11,12,13,15,15,16,17,18,20,21,23,24,27,28
Mean=
15
07+11+12+13+15+15+16+17+18+20+21+23+24+27+28
=
15
267
=17.8
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