Question
Remi earns a profit of 20% on selling an article at a
certain price. If she sells the articles for ₹. 8 more, she will gain 30%. What is the original cost price of 16 such articles?Solution
Let the C.P. of an article be Rs. x. According to the question, 120% of C.P. + 8 = 130% of C.P. ⇒ 130% of x – 120% of x = 8 ⇒ 10% of x = 8 ⇒ 10/100 × x = 8 ⇒ x = 80 Original C.P. of 16 article = 16x ⇒ Required C.P. = 16 × 80 ⇒ Required C.P. = Rs. 1280 ∴ The original cost price of 16 such articles is Rs. 1280
- Simplify:

1280 ÷ 8 + 490 ÷ √49 + ? = 150 * 2
1780 – 60 ÷ 4 x 80 = ?
- Find the simplified value of the given expression.

72% of 486 – 64% of 261 = ?
5760 ÷ 45 × 15 = ?
What will come in the place of question mark (?) in the given expression?
40% of 150 - ?% of 75 = 15 × 1.6
81% of 2300 – 34% of 550 = ?
The value of 97 × 103 is _________.
9/5 × 18/25 ÷ 42/21 = ? - 82/75