Question
A shopkeeper marked an article Rs. 850 above its cost
price and sold it after giving a discount of 30% and earned a profit of 20%. Find the cost price of the articleSolution
Let cost price of the article is Rs. 100x So, 1.2 × 100x = 0.7 × (100x + 850) Or, 112x = 70x + 595 Or, 50x = 595 Or, x = 11.9 Cost price of the article = 100 × 11.9 = Rs. 1190
34 × 5 × 2 ÷ 6 + 7 × 5 + 13 = (?)× 6 – 754
58% of 3300 - ?% of 2900 = 1740
390/? = √256 + 3.5
135.37 – 50.24 + 629.09 – 199.50 = ? – 214.68 + 42.65
32% of 4080 + 24% of 455 = x% of 4000

(√121 + √196) × 7 =? × 5
1300% of 2341 + 1200% of 6321 = ?
5/2 of 5/6 of 12/5 of 54 % of 5250 = ?
125% of 80 – 6 × 4 = ? × 13 – 54