Question

give me a detailed solution otherwise your answer will reported.open challenge for girls only.

Answer 1

nice question..answer is 120cm
have fun...

Answer 2

Hello Friend...

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The answer of u r question is...

Ans:.

1. -v. -v
m= ------ =. -------. =. ------- ( now cancel 2,60 so
2. 4. 60. 60 became 30)

-v = -30
v. = +30

1. 1. 1
--- + -- = ----
v. u. E

1. 1. 1
--- - ---- =. -------
30. 60. E

2 - 3. 1
--------- = ----
60. E

1. 1
-------- = ------
60. E


Also,

1. -v
m= --------- = ------
3. u

-3 = u


1. 1. 1
------ + --------- = -----------
u. v. f

-3 +v= 60

-3 + 3
-------- = 60
3v

2
---- = 60( now cancel 3,60 60 will become 20)
3v

v= 40
-u = 120

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Thank you...☺️☺️☺️