Banking Maths SSC SSC-Maths Time and Work

Time and Work Notes

TIME AND WORK

  • If A can do a piece of work in n days, then A’s 1-day work is – 1/n
  • If A’s 1 day’s work is 1/n, then A can finish the work in n days.
  • If A is thrice as good a workman as B, then –

The ratio of work done by A and B = 3:1

The ratio of time taken by A and B to finish a work = 1:3

  • If M1 men can do a W1 piece of work, working T1 hours daily in D1 days and M2 men can complete W2 work, working T2 hours in D2 days then –

M1 D1 T1 W2 = M2 D2 T2 W1

  • If A completes a piece of work alone in x days and B completes the same work in y days. Then they together will finish the work in –

(x × y/x+y) days

  • If ‘A’ and ‘B’ completes a piece of work together in x days and B alone completes the same work in y days. Then ‘A’ alone will finish the work in –

(x – y/y – x) days

  • If three men A, B, and C alone finish a piece of work in x, y, and z days. Then they together finish the work in-

 ( xyz/xy + yz + zx ) days

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