Acircuit contains three sisters connected in a series of value of our is 200 value of our two is 640 the value of our three is 500 this sir can you supplied with six vdc what is the total voltage dropped across the three resistors

Since the sisters are all in series, they behave exactly like a single unit with resistance of (200 + 640 + 500) = 1,340 ohms.

If those three sisters are the ONLY components in the circuit, then the total voltage dropped across them is the supp[lied voltage of 6 volts.

The current through the series circuit is (6V) / (1,340 ohms) = 0.0045 Ampere.

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Note:

Next time you dictate anything, you really need to look it over before you post it, and see what your phone THINKS you said.  Then correct it where it needs correcting.

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min