Multiple Choice QuestionsFrom the top of a cliff 100 metre high, the angles of depression of the top and bottom of a tower are 45° and 60° respectively. The height of the tower is
A vertical tower stands on a horizontal plane and is surmounted by a vertical flag staff of height h. At a point on the plane, the angle of elevation of the bottom of the flag staff is α and that of the top of the flag staff is β. Then the height of the tower is
A man on the top of a tower, standing on the sea shore, finds that a boat coming towards him takes 10 minutes for the angle of depression to change from 30° to 60°. How soon the boat reach the sea-shore?
5 minutes
7 minutes
10 minutes
50 minutes
The following pie-chart shows the monthly expenditure of a family on various items. If the family spends Rs. 825 on clothing, answer the questions.
What is the total monthly income of the family?
Rs. 8025
Rs. 8250
Rs. 8520
Rs. 8520
The following pie-chart shows the monthly expenditure of a family on various items. If the family spends Rs. 825 on clothing, answer the questions.
What per cent of the total income does the family save?
15%
50%
20%
20%
The following pie-chart shows the monthly expenditure of a family on various items. If the family spends Rs. 825 on clothing, answer the questions.
What is the ratio of expenses on food and miscellaneous?
3 : 4
2 : 3
3 : 2
3 : 2
The following pie-chart shows the monthly expenditure of a family on various items. If the family spends Rs. 825 on clothing, answer the questions.
What is the average of expenses on clothing and rent?
Rs. 1443.75
Rs. 1344.57
Rs. 1574.34
Rs. 1574.34
The following pie-chart shows the monthly expenditure of a family on various items. If the family spends Rs. 825 on clothing, answer the questions.
The ratio of average of expenses on food, clothing and miscellaenous items to the average of expenses on savings and rent is
3 : 2
1 : 3
2 : 1
2 : 1
and 
then the value of 
is
...(i)
Switch
is equal to
