produced by or involving two or more parties working together
that mean
A+B=?
A=30days
B=90days

You've done this sort of problem before --- Recognize this???

Days required for both workers acting simultaneously to complete the job = 1/ ([the fraction of the work completed by 'A' per day] + [the fraction of the work completed by 'B' per day])

 

oh ok.
A=1/30days
B=1/90days
A+B=1/30+1/90=4/90?

 

ok, yesterday i asked question why & how to solve this ? 1/30+1/90
i have mug up but don't understand may be forgotten school math.

 

oh ok.
A=1/30days
B=1/90days
A+B=1/30+1/90=4/90?

4/90 can be reduced!

So yes - together the workers will preform 4/90 of the job per day -- so how many days will it take them to complete the job?

 

ok, yesterday i asked question why & how to solve this ? 1/30+1/90
i have mug up but don't understand may be forgotten school math.

What do you mean by "I have mug up" -- that makes no sense to me

 

4/90 can be reduced!
4/90=2/45 days

 

What do you mean by "I have mug up" -- that makes no sense to me

ok, i got it
https://www.mathsisfun.com/fractions_addition.html

 

4/90 can be reduced!
4/90=2/45 days

At 2/45 of 'a job' per day -- how many days will it take to complete the job???

 

What do you mean by "I have mug up" -- that makes no sense to me

Definition of MUG UP. intransitive verb. British. : to study intensively (as for an examination) transitive verb.
my teacher say that in past...

 

At 2/45 of 'a job' per day -- how many days will it take to complete the job???

45/2days 22.5days

 

Definition of MUG UP. intransitive verb. British. : to study intensively (as for an examination) transitive verb.
my teacher say that in past...

Mind your infinitives! (e.g. "I have to mug up") -- Moreover, inasmuch as we're fighting a language barrier, avoidance of slang may be advisable?

 

45/2days 22.5days

Correct!

 

Mind your infinitives! (e.g. "I have to mug up") -- Moreover, inasmuch as we're fighting a language barrier, avoidance of slang may be advisable?

An infinitive is a verbal consisting of the word to plus a verb (in its simplest "stem" form) and functioning as a noun, adjective, or adverb. The term verbal indicates that an infinitive, like the other two kinds of verbals, is based on a verb and therefore expresses action or a state of being.

 

A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?


A=1/6
B=1/8
A+B=Rs 3200
A+B+C=3days

 

An infinitive is a verbal consisting of the word to plus a verb (in its simplest "stem" form) and functioning as a noun, adjective, or adverb. The term verbal indicates that an infinitive, like the other two kinds of verbals, is based on a verb and therefore expresses action or a state of being.

Hence "To" in the example functions as an 'infinitive marker' --- But we're studying math -- not grammar - so, shall we continue???

 

if both AB do work
A=1/6
B=1/8
A+B=1/6+1/8=7/24
24/7days =3.42days

 

A alone can Co a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?

A=1/6
B=1/8
A+B=Rs 3200
A+B+C=3days

what does "Co a piece" mean?

 

A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?

A=1/6
B=1/8
A+B=Rs 3200
A+B+C=3days
A+B=1/6+1/8=3.42days
A+B+C=3days

 

Firstly, figure out what fraction of the work C can do by himself (per day)...

 

Given that:

1/6+1/8+x=1/3
X= the fraction of the job contributed by 'C' daily...



Come on! This is not a difficult problem!