Question
Two varieties of rice costing Rs 40 per kg and Rs 50 per
kg are mixed and sold at Rs 44 per kg without any profit or loss. In what ratio are the two varieties mixed (40-rupee rice : 50-rupee rice)?Solution
ATQ, Use alligation: Cheaper = 40 Dearer = 50 Mean price = 44 Difference: 50 − 44 = 6 44 − 40 = 4 Ratio (cheaper : dearer) = 6 : 4 = 3 : 2 But 40-rupee rice is cheaper; its quantity ∝ 50 − 44 = 6 50-rupee rice quantity ∝ 44 − 40 = 4 So 40 : 50 rice = 6 : 4 = 3 : 2
8(3/4) + 5(1/6) – 4(3/4) = ?
What should come in place of (?) question mark in the given expression.
(2⁵ × 3⁴) ÷ (6³) = ?
1280 ÷ 8 + 490 ÷ √49 + ? = 150 * 2
What will come in place of (?) in the given expression.
{(60% of 250) + √144} ÷ (3² - 4) = ??% of 740 – 8% of 650 = 7.2
9 × 4 ? ÷ 16 = 144
82.3 × 644.7 × 723.4 × 815.85 = 72?
Simplify the given expression:
[(2.3)3 + (15.9) ³ + (3.7) ³ – 3 × 2.3 × 15.9 x 3.7)] / [(2.3) ² + (15.9) ² + (3.7) ² – 2.3 ...
447.8 × 441.2 ÷ 445 = 44 × 44?
What should come in place of (?) question mark in the given expression.
[ (48 ÷ 6) + (81 ÷ 9) ]² ÷ 17 = ?
Relevant for Exams:
