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?

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 cottage industry produces a certain number of pottery articles in a day.It was observed on a particular day that the cost of production of each articles (in rupees)was 3 more than twice the number of articles produced on that day.If the total cost of production on that day was Rs.90,find the number of articles produced and the cost of each articles.

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?