Question

टाइम एंड वर्क फॉर्मूला
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Answer 1

Given below are a few such important time and work formulas for your reference:

• Work Done = Time Taken × Rate of Work

Rate of Work = 1 / Time Taken

Time Taken = 1 / Rate of Work

• If a piece of work is done in x number of days, then the work done in one day = 1/x
• Total Wok Done = Number of Days × Efficiency

Efficiency and Time are inversely n proportional to each other

• X:y is the ratio of the number of men which are required to complete a piece of work, then the ratio of the time taken by them to complete the work will be y:x

Answer 2

Solution :- As we know that, Tan( A + B ) = tanA + TanB /1- TanA*TanB similarly,

Tan 45º = Tan (20° + 25°) = Tan20° + tan25 /1-

Tan20°Tan25°

1 = tan20° + tan25° / 1 - tan20° tan25°

1 - tan20° tan25º = tan20° tan25° Answer