2 years ago in Time and Work

# A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :

[A] <sup>1</sup>/<sub>4</sub>
[B] <sup>1</sup>/<sub>10</sub>
[C] <sup>7</sup>/<sub>15</sub>
[D] <sup>8</sup>/<sub>15</sub>

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## Related Questions

• [A] 5 days
• [B] 6 days
• [C] 9 days
• [D] 10 days

### Three men A, B, C working together can do a job in 6 hours less time than A alone, in one hour less time than B alone and in one half the time needed by C when working alone. Then A and B together can do the job in:

• [A] 2/3 hours
• [B] 3/4 hours
• [C] 3/2 hours
• [D] 4/3 hours

### Ram Lal is a renowned packager of fruits in Varanasi. He packs 70 mangoes or 56 guavas every day working 7 hours a day. His wife also helps him. She packs 30 mangoes or 24 guavas working 6 hours per day. Ram Lal has to pack 3300 mangoes and 2400 guavas with help of his wife. They works alternately, each day 10 hours. His wife started packaging firs day and works every alternate days. Similarly, Ram Lal started his work second day and and worked alternatively till the completion of the work. In how many days the work will finished?

• [A] 85(3/2)
• [B] 85
• [C] 84
• [D] 80
• [E] None of these

• [A] 2:1
• [B] 2:3
• [C] 1:3
• [D] 1:2

• [A] 8 days
• [B] 10 days
• [C] 12 days
• [D] 15 days