Question

Section
E
28. Subba Rao Started work in 1995 at an annual salary of 5000 and received an incremen
of 200 each year. In which year did his income erach 3 7000 ?
OR
The angle of elevation of the top of a building from the foot of a pillar is 30° and angles
elevation of the foot of a building from top of pillar is 60°. If pillar is 50 m high, then fins
the height of building,
OR
Find the mean of the following frequency distribution by step derivation method.
Life Period (in hrs.) 0-20 20-40 40-60 60-80 80-100 100-120
Frequency 10 35
61 38
29
52
SOL​

Answer 1

Answer:

therefore this is the answer