21. यदि एउटा साइकलको अङ्कित मूल्यमा 10% छुट दिँदा विक्रेतालाई
5% नाफा हुन्छ र 5% छुट दिँदा रु. 351 नाफा हुन्छ भने उक्त
साइकलको क्रयमूल्य पत्ता लगाउनुहोस् ।
When a cycle is sold allowing 10% discount on its marked
price a seller gains 5% and allowing 5% discount the profit is
Rs-351. Find the cost price of the cycle. (Ans: Rs.3240)

On a hot saturday morning while people are working inside, the air conditioner keeps the temperature inside the building at 22degreesc. at noon the air conditioner is turned off, and the people go home. the temperature outside is a constant 33degreesc for the rest of the afternoon. if the time constant for the building is 4 hr, what will be the temperature inside the building at 4 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? at 6 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? when will the temperature inside the building reach 24degreesc? 324281