The following pie-cha1t shows the sales in a restaurant in a day, in percentage terms.
If the total number of items sold in a day is 100, then what is the central angle made by the sector giving data about the sale of 'Sandwich' in the pie-chart?
Kajal can do a piece of work alone in 24 days, while Neha can do the same work alone in 40 days. Kajal started the work alone, and then after 12 days, Neha jo ined her till the completion of the work. How long did the work take to be completed since Kajal started to work on it?
\(\frac{37}{4}\ \text{days}\)
\(\frac{39}{4}\ \text{days}\)
\(\frac{39}{2}\ \text{days}\)
\(\frac{37}{2}\ \text{days}\)