Question
Working alone, B can complete the work in 20 days. C is
twice as efficient as B and A takes 2 days more than it takes C to complete the work. Working together, in how much time would they be able to complete 7 such works?Solution
Time taken by B to complete the work = 20 days Time taken by C to complete the work =20/2 = 10 days Time taken by A to complete the work alone = 10 + 2 = 12 days Work done by A, B and C together in 1 day. ⇒ (1/20+ 1/10 + 1/12) = (3 + 6 + 5)/60 = 14/60 this means if would take 30/7 days for A, B and C to complete the work together ∴ Time taken A, B and C to complete 7 works = 7 × 30/7 days = 30 days
Parturition in pigs is known as
Disease caused by Flexibacter columnaris ,is characterized by saddle-shaped lesions in the mid-body position about the dorsal fin of the fish?
What is the primary purpose of drainage systems in Agriculture?
Which of the following histone is smallest:
The critical slope for soil erosion is:
In which one of the following years was NABARD established in India as an Apex Financial Institution for Rural and Agricultural Development?
The rate of decrease of temperature with height is known as:
Vascular bundles in dicot stem are _____
Which of the following is not a "direct gene transfer" method:
The Indian Agricultural Research Institute (IARI) recently introduced a new high-yielding wheat seed variety which is resistant to yellow, and leaf rust...
