If the standard deviation of a population is 4.5, what would be the population variance?
Given standard deviation σ = 4.5 We know that variance is the square of the standard deviation .. Variance = (standard deviation)² = (σ)² = 4.52 = 20.25
If the selling price and cost price of a book is Rs. 440 and Rs. 320, then find the profit percentage in this transaction.
How many kilograms of rice cost Rs. 60 per kg? must be mixed with 24 kg. of rice costing Rs. 42 per kg. so that there may be a gain of 12% by selling th...
By how much % should a shopkeeper increase the marked price of his item so that the customer gets a profit of 8% even after giving a discount of 10%?
Kapil and Samar sold their horses at Rs 2,420 each but Kapil incurred a loss of 20%, while Samar gained 10%. What is the ratio of the cost price of the ...
A purchased an article for Rs 1550. She sold the article at 8% profit. She then added Rs 355 to the amount received and purchased a purse such th...
The ratio of cost price to marked price of a rice bag is 7:8 and the Marchant gets a profit of Rs.80 by selling the rice bag at Rs. 500. Then, what will...
A bought an article at 12.5% less of the marked price and sold it at 5% more than the marked price. Find the profit earned by him.
A school bag is sold for Rs.540 after giving two successive discounts of 10% and 20%. If school bag is marked up by Rs.400 above its cost price, then fi...
When a shopseller offers a discount of d% on item A and (d + 5)% on item B, quoting an equal marked price on both the items. If the ratio of S.P of item...
Anita tried her hands on selling a cake that she had baked. She sold half of her cake at 20% profit, but seeing that cake would perish soon, sold half o...
