`A ,\ B ,\ 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`

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

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 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 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?

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?

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?

Three taps A, B and C can fill an overhead tank in 6 hours, 8 hours and 12 hours respectively. How long would the three taps take to fill the empty tank, if all of them are opened together?