Multiple choice

A, B and C working together can complete a work in 10 days when C only worked for the the first three days when 37/100 of the job was done. Also, the work done by A in 5 days is equal to the work done by B in 4 days. How many days would be required by the fastest worker to complete the entire work? A, B और C किसी कार्य को 10 दिन में पूरा करतें हैं जब c केवल प्रथम 3 दिन कार्य करें जब 37/100 कार्य पूरा हुआ था | एवं A के द्वारा 5 दिन में किया गया कार्य B के द्वारा किये गए 4 दिन के कार्य के बराबर हैं | सब से जल्दी कार्य को पूर्ण करने वाले मजदूर को कितने दिन लगेंगे?

  1. 20

  2. 25

  3. 16

  4. 30
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

From A's 5-day work = B's 4-day work, their rates are in ratio 4:5. If A = 4x, B = 5x, C = cx. In first 3 days: 3(4x + 5x + cx) = 37/100. Solving gives fastest worker (A at 4x) needs 20 days. C only worked first 3 days when 37% was done.

Keep practicing — related questions