Question

A can do apeice of work in 4 days, B can do it in 6 days. How many days A and B take to complete working together.

Exam h serious answer dena​

Answer 1

$\huge{\underline{\sf{Question :-}}}}$

A can do a peice of work in 4 days, B can do it in 6 days. How many days A and B take to complete working together.

$\huge{\underline{\sf{Answer :-}}}}$

✯ $\boxed{ \sf \blue{For\:A,}}$

✏ Number of days required to do the work = 4 days.

✏ ∴ In 1 day, A can work = 1/4

✯ $\boxed{ \sf \blue{ For\:B,}}$

✏ Number of days required to do the work = 6 days.

✏ ∴ In 1 day, B can work = 1/6

$\red{\underline\bold{Now,}}$

✏ Total work done by A and B in 1 day = 1/4 + 1/6

= $(1\:×3\:+\:1\:×\:2)$$÷\:12$

= $(3\:+2)$$÷\:12$

= $\frac{5}{12}$

$\green{\underline\bold{Again,}}$

✏ Number of days taken by A and B to complete the work together = $1\:/\:Total\:work \:done\: by\: A \:and \:B\: in \:1 \:day$

⠀⠀⠀⠀⠀⠀= $1\:/\:(5\:÷\:12)$

⠀⠀⠀⠀⠀⠀= $12\:/\:5$

⠀⠀⠀⠀⠀⠀= 2 $\frac{12}{5}$

$\green{\underline\bold{∴\:The\: required\: answer\: is :}}$

= 2 $\frac{12}{5}$ days.

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Answer 2

Answer:

answer is

2 12/5......