Question

The water level in a dam is 500 yd. Due to heavy rain the level of water is increasing 5% for every 10 days of the total level. Find the missing number.

Time taken (in days)	Water level (in yd)
0	500
10	A
20	551.25
30	578.8125

• A. 525

Answer 1

The correct option is A 525
Given:

Initial amount of water in the dam = 500 yd
Percentage of water increases for every 10 days is 5% of the total

$\therefore$ At t = 10 days,
$\text{Amount of water =}500+500\times 5\%=525$

$\therefore$ The value of A is 525