A shopkeeper sold an article for Rs. 700 after offering a discount of 20%. If he earned a profit of 25%, then find the ratio of cost price to the marked price, of the article.

(√8648 ×7) ÷ (3.9 ×5.99) = ?

630.11 ÷ 20.98 × 5.14 – 125.9 = √? 

159.98% of 4820 + 90.33% of 2840 = ? + 114.99% of 1980

? = 28.04² ÷ (4.01⁵ + 9.89 × 20.20) + 84.56% of (198.76 × 30.03)

2.51% of 800 - 3.97% of 250 = ?

Direction: Solve the following expression and calculate the approximate value.

398% of 388 + 129% of 323.89 – 430.93

999.99 + 99.99 + 99 = ?

14.2% of 7200 + 2.8% of 6400 =?

1314.04 – 450.18 + 359.98 ÷ 12.06 = ?

1199.98 ÷ 40.48 × 20.12 = ? × 3.16