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)

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

close lines strong magnet less close weaker

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

an electric circuit