Working alone, B can complete the work in 16 days. C is twice as efficient as B and A takes 4 days more than it takes C to complete the work. Working together, in how much time would they be able to complete 13 such works?
Time taken by B to complete the work = 16 days Time taken by C to complete the work = 16/2 = 8 days Time taken by A to complete the work alone = 8 + 4 = 12 days Work done by A, B and C together in 1 day. ⇒ (1/16 + 1/8 + 1/12) = (3 + 6 + 4)/48 = 13/48 this means if would take 48/13 days for A, B and C to complete the work together ∴ Time taken A, B and C to complete 13 works = 13 × 48/13 days = 48 days
Many politicians in the past have won elections by promising to cut taxes, most of the new ones now ……………………….
...Colleges cannot ______ to ragging because of the Anti Ragging Act.
Dead Ringer
Economists argue about a lot of things, yet many would probably see eye to eye on the benefits of free trade, which generates wealth by allow...
The difficulty is trying to spot something big before it becomes a problem but not crying bee too often.
Select the most appropriate meaning of the given idiom.
Raise the bar
to back the wrong horse
Angry residents are up in arms over a proposal to site a giant mobile phone mast near their homes.
Up against the wall
In each question below, a sentence is given with an idiom/phrase printed in bold type. That part may contain a grammatical error. Each sentence is follo...
