CBSE Class 8 Answered
A and B together can paint a room in 18days. They work together for8days and then B goes away. A finishes the rest of work in 15days. How long would each take to finish the working separeately
Asked by acanilchauhan7 | 05 Nov, 2019, 23:50: PM
Work done by A and B together is
![open parentheses 1 over A plus 1 over B close parentheses 18 equals 1 space.... space left parenthesis i right parenthesis
T h e y space w o r k space 8 space d a y s space t o g e t h e r space a n d space t h e n space B space g o e s space a w a y comma space A space c o m p l e t e space t h e space r e s t space o f space w o r k space i n space 15 space d a y s
rightwards double arrow 1 over A left parenthesis 8 plus 15 right parenthesis plus 1 over B 8 equals 1 space.... space left parenthesis i i right parenthesis
S o l v i n g space left parenthesis i right parenthesis space a n d space left parenthesis i i right parenthesis space s i m u l a tan e o u s l y comma space w e space h a v e
A equals 27 space d a y s space a n d space B equals 54 space d a y s](https://images.topperlearning.com/topper/tinymce/cache/b49ca9e69269fc73fdd28a9e5d9c23d8.png)
![open parentheses 1 over A plus 1 over B close parentheses 18 equals 1 space.... space left parenthesis i right parenthesis
T h e y space w o r k space 8 space d a y s space t o g e t h e r space a n d space t h e n space B space g o e s space a w a y comma space A space c o m p l e t e space t h e space r e s t space o f space w o r k space i n space 15 space d a y s
rightwards double arrow 1 over A left parenthesis 8 plus 15 right parenthesis plus 1 over B 8 equals 1 space.... space left parenthesis i i right parenthesis
S o l v i n g space left parenthesis i right parenthesis space a n d space left parenthesis i i right parenthesis space s i m u l a tan e o u s l y comma space w e space h a v e
A equals 27 space d a y s space a n d space B equals 54 space d a y s](https://images.topperlearning.com/topper/tinymce/cache/b49ca9e69269fc73fdd28a9e5d9c23d8.png)
Answered by Renu Varma | 06 Nov, 2019, 10:51: AM
Application Videos
Concept Videos
CBSE 8 - Maths
Asked by mmanju10984 | 19 Jan, 2024, 18:29: PM
CBSE 8 - Maths
Asked by sd9854849 | 07 Jan, 2024, 08:09: AM
CBSE 8 - Maths
Asked by mishramanisha242 | 20 May, 2022, 19:48: PM
CBSE 8 - Maths
Asked by chehakkataria2006 | 02 Mar, 2020, 15:40: PM
CBSE 8 - Maths
Asked by kaustubhkladda | 09 Feb, 2020, 12:12: PM
CBSE 8 - Maths
Asked by acanilchauhan7 | 05 Nov, 2019, 23:50: PM
CBSE 8 - Maths
Asked by 365542180671386 | 16 Dec, 2018, 15:44: PM
CBSE 8 - Maths
Asked by Topperlearning User | 04 Jun, 2014, 13:23: PM
CBSE 8 - Maths
Asked by Topperlearning User | 04 Jun, 2014, 13:23: PM
CBSE 8 - Maths
Asked by Topperlearning User | 04 Jun, 2014, 13:23: PM