an express train traveled at an average speed of 100 km/hr stopping for 3 minutes after every 75 km. A local train traveled at a speed of 50 km/hr, stooping for 1 minute after every 25 km. If trains began travelling at the same time , how many kms did the local train travel in the time it took the express train to travel 600 km?
A lotus is seen 5 cm above the water level of a lake. With the onset of the wind it sinks in the water 10cm away from its place. How deep is the water in that place?
the thing i know is that this question is solved using similarity of triangles but my doubt is that how to decide the nomenclature of the triangles... like trig ADB- trig ADC or trig ADB- trig CDA how to decide that??
Triang ABC is an acute ang triang............a line passn thru d incentr of d triang divides the triang into 2 equal areas....if S is the perimeter of DABC, then CD+CE=______?