Question
Suyash have total amount of Rs.2300 out of which, he
spent 20% on food, 40% of the rest on travelling. Out of remaining amount he spends Rs.504 on miscellaneous and saves the rest. Find the amount he saved.Solution
Amount spent on food = 0.2 x 2300 = Rs.460 Amount spent on travelling = 0.4 x (2300 – 460) = Rs.736 His savings = 2300 – (460 + 736 + 504) = Rs.600
For A = [[2,3],[-1,4]], find det(2A).
A man spends 30% of his salary on rent, 25% on groceries, and the remaining on savings. If he saves ₹18,000, what is his total salary?
Determine the mean of the following observations:
24, 26, 22, 25, 20, 21, 24, 251153, 1206, ?, 1326, 1393, 1464
Solve the quadratic equations and determine the relation between x and y:
Equation 1: x² + 2x - 15 = 0
Equation 2: y² - 4y - 12 = 0
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