Question
A worker earned Rs. 900 per month in 1980. The
cost-of-living index increased by 60% between 1980 and 1984. How much extra income should the worker have earned in 1984 so that he could buy the same quantities as in 1980?Solution
Cost of living tndex = consumer price Income income in 1980 = Rs 900/ Month Total Tncome (Annual) = 900 `xx12`                    = Rs 10800 `P_(8084) = 160` ` ` Extra income the worker has earned        = 1440 - 900        = 540/ Month
√4096 + 4/5 of 780 − ? = 296
√(?) = (897 × 51) ÷ 1016.6
5121.3 × 641.8 ÷ 80.5 = 8?
1500 × 60% of 25% = ? 2Â
[(120)2 ÷24 ×25] ÷ 250 =?
If 28957.5 ÷ 268.125= 108, then 289.575 ÷ 2681.25 is equal to:
25.6% of 250 + √? = 119
- What will come in the place of question mark (?) in the given expression?
(40 ÷ 5 + 56 ÷ 8) X (? - 42) = 120 Simplify the expression:
(9x² - 25) / (3x + 5)
2/5){(3/5) × 750 + 40% of 375} = ? × 16