A contract on construction job specifies a penalty for delay of completion beyond a certain date is as follows,
₹200 for 1st day,`₹250` for 2nd day,`₹300` for 3rd day and so on.If the contractor pays 27,750 as penalty,find the number of days for which the work is delayed.

A contract of construction job specifies a penalty for delay of completion beyond a certain date as follows:₹200 for the first day,₹250 for the second day,₹300 for the thrid day etc.the penalty for each succeeding day being ₹50 more than for the preceding day.How much does a delay of 30 days cost the contractor?

Formulate the following problems as a pair of equation,and hence find their solutions:(ii) 2 women and 5 men can together finish an embroidery work in 4 days,while 3 women and 6 men can finish it in 3 days.Find the time taken by 1 woman alone to finish the work,and also that taken by 1 man alone.

In a primary school parents asked about of the number of hours they spend per day in helping their children to do home work. There were 90 parents who helped for frac(1)(2) hour to 1frac(1)(2) hours. The distribution of parents according to the time for which, they said they helped is given in the adjoining figure, 20% helped for the than 1frac(1)(2) hours per day, 30% helped for frac(1)(2) hour to 1 hours, 50% did not help at all. Using this, answer the following : How many said that they helped more than 1frac(1)(2) hours?

In a primary school parents were asked about of the number of hours they spend per day in helping their children to do home work. There were 90 parents who helped for frac(1)(2) hour to 1frac(1)(2) hours. The distribution of parents according to the time for which, they said they helped is given in the adjoining figure, 20% helped for more than 1frac(1)(2) hours per day, 30% helped for frac(1)(2) hour to 1 hours, 50% did not help at all. Using this, answer the following : How many said that they didnot help?