ABCD is a rectangle. E and F are midpoints of AB and CB respectively. If the area of the shaded ΔAEF is 7 cm2, then the area of rectangle ABCD, is____ .
Suhana's marks for the four terms 1st, 2nd,3rd and 4th was 70%. The marks for each term is out of 50. Study the given bar graph carefully to determine what was her percentage for the first term.
AEqual to or more than 70%
BEqual to or less than 20%
CBetween 20% and 30%
DBetween 50% and 70%
Priti earns a 5% commission for each mobile phone she sells. In first week she sold 120 mobile phones of value ₹ 12000 each, in second week she sold 70 mobile phones of value ₹ 30000 each and in third week she was able to sold 90 mobile phones of value ₹ 10000 each. How much commission she earned in these three weeks?