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Cost price of item A is Rs. 300 less than that of item B for a shopkeeper. He marks item A and B above 80% and 40% respectively their cost prices and sold them at 20% and 40% discount respectively. If selling price of item, A is Rs. 18 more than that of item B, then what is the ratio of cost price of item A to that of item B?
Which of the following statements are true?
Statement I Big data refers to no precise quantity, but generally refers to data in the range of Petabytes and Exabyte, i.e. billions to trillions of records, all from various sources. Big data is generated much faster. than traditional data in much larger quantities.
Statement II Big data interests industries because they are able to learn more patterns and curious variances than smaller data sets, with the capability to provide valuable insights into consumer behaviour, weather systems, financial market activity, or other phenomena.
Statement III Various departments and product lines use various applications within most organisations and store data in separate datasets. These separate databases may contain similar data, but data from one data base to another is not always consistent. This is called data silo.
A special redo-only log record < Ti, Xj, V1> is written to the log, where V1 is the value being restored to data item Xj during the rollback. These log records are sometimes called
The sumof the pre-tax costs of items A ans item B is Tk. 300. In dhaka, each item would be charged a flat 7% tax. In Rangpur item A is subject to 5% tax and item b is subject to 10% tax. If the tax in Rangpur on the purchase of both items is exactly Tk 3 more than it is in Dhaka, than what is the pre - tax price of item A?
X sells an item to Y at a profit of 28% on his cost and Y sells the same item to Z at a loss of 25% on his cost. If X thus sold the item to Z a Tk. 2 less than the item to X, then what is the cost of the item to X?
The price of item A increases by 50 paise every year while the price of item B increases by 25 paise every year. If in 2008, the price of item A was Rs. 3.20 and that of B was Rs. 5.30, in which year item A will cost 40 paise more than the item B?
X sells an item to Y at a profit of 28% on his cost and sells the same item to Z at a loss of 25% on his cost. If Y thus sold the item to Z a Tk. 2 less than the item to X, then what is the cost of the item to X?
Consider the following log sequence of two transactions on a bank account, with initial balance 12000, that transfer 2000 to a mortgage payment and, then apply a 5% interest (i) T1 start (ii) T1 B old = 12000 new = 10000 (ii) T1 M old = 0 new = 2000 (iv) T1 commit (v) T2 start (vi) T2 B old = 10000 new = 10500 (vii) T2 commit Suppose the database system crashed just before log record 7 is written. When the system is restarted, which one statement is true of the recovery procedure?
The following table shows the age-wise brand ownership of mobile phone handsets. Brands 1 year old 1 to 2 years old 2 to 5 years old More than 5 years old A 15% 45% 40%   B 5% 15% 25% 55% C 10% 10% 10% 70% D 25% 55% 20%   E 15% 50% 20% 15%   If a total of 5000 ‘C’ mobile phone sets are sold till date, then how many are more than one year old?
A manufacturer of TV wants to make a profit of Tk. 300,000 on sale of 200 TV sets. It costs Tk. 10,000 each to make the first 100 TV sets and Tk. 7,500 each to make TV sets after the first 100 sets. What should be the selling price of each TV sets in Taka?