Michael finished colouring a picture in `7/(12)` hour. Vaibhav finished colouring the same picture in `3/4` hour. Who worked longer? By what fraction was it longer?

Michael finished colouring a picture in 7/12 hour. Vaibhav finished coluring the same picture in 3/4 hour. Who worked longer? By what fraction was it longer?

Michacl finished colouring a picture in frac{7}{12} hour. Vaibhav finished colouring the same picture in frac{3}{4} hour. Who worked longer? By what fraction was in longer?

A can finish a piece of work in 12 hours while B can finish it in 15 hours. How long will both take to finish it, working together?

A,backslash B,backslash C and D completed colouring a picture in (3)/(4) hour,(7)/(12) hour,(5)/(8) hour and (6)/(7) hour respectively.Which of the following took the least time in colouring the picture? A (b) B( c) C( d ) D

Rafiq exercised for 3/6 of an hour, while Rohit exercised for 3/4 of an hour. Who exercised for a longer time?