Question
An item costs ₹400. During a festival sale, a company
offers a sale discount that offers x% off on its regular price along with a discount coupon of 10%. The price of the item after using both the sale discount and the discount coupon, is ₹216. What is the value of x?Solution
The cost price of an item = Rs. 400 The selling price of the item = Rs. 216 Sale discount = x% Coupon discount = 10% The discount = 400 - 216 = Rs. 184 The total discount = (184/400) × 100 = 46% So, x + 10 - (10x/100) = 46 ⇒ x + 10 - x/10 = 46 ⇒ 9x/10 + 10 = 46 ⇒ 9x/10 = 46 - 10 ⇒ 9x/10 = 36 ⇒ x = 36 × (10/9) = 40 ∴ The value of x is 40
If p = 24 - q - r and pq + r(q + p) = 132, then find the value of (p² + q² + r²).
((99.9 - 20.9)² + (99.9 + 20.9)² )/(99.9 x 99.9 + 20.9 x 20.9) = ?
...
Find the value of the given expression-
(4x+4 -5× 4x+2) / 15×4x – 22×4x
If 4x² + y² = 40 and x y = 6, then find the value
of 2x + y?
If p = 40 - q - r and pq + r(q + p) = 432, then find the value of (p² + q² + r²).
47.98 × 4.16 + √325 × 12.91 + ? = 79.93 × 5.91
If x + y = 4 and (1/x) + (1/y) = 24/7, then the value of (x3 + y3).
- If p = 20 - q - r and pq + r(p + q) = 154, then find the value of (p² + q² + r²).
If a = (√2 - 1)1/3, then the value of (a-1/a)3 +3(a-1/a) is:
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