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The cost of 4 pens is equal to the cost of 6 pencils. The cost of a CD is equal to the cost of 4 pencils and the cost of a book is equal to the cost of 6 pens. What is the ratio of the cost of a book to the cost of a CD?

A. 9/4

B. 4/9

C. 2/3

D. 3/2

E. None of these

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সঠিক উত্তরঃ A. 9/4

Explanation:

9 numbers are written in ascending order, middle number is average of that nine numbers. Average of five larger numbers is 68 and also average of five smaller numbers is 44. What is the sum of all nine numbers?
. A man purchased equal number of bananas at two different rates-one at the rate of 8 taka per dozen and the other at the rate of 10 taka per dozen. After that, he sold those bananas at an average rate of 11 taka per dozen and thus made a profit of 100 taka. How many dozens of banana did he purchase altogether?
দুইটি নল দিয়ে একটি চৌবাচ্চা ৮ মিনিটে পূর্ণ হয়। নল দুইটি খুলে দেয়ার ৪ মিনিট পর ১ম নল বন্ধ করে দেয়ায় চৌবাচ্চাটি পূর্ণ হতে আরও ৬মিনিট লাগলো। প্রত্যেক নল দ্বারা পৃথকভাবে চৌবাচ্চাটি পূর্ণ হতে কত সময় লাগবে?
Of a group of people surveyed in a political poll, 60 percent said that they would vote for candidate R. Of those who said they would vote for R. 90 percent actually voted for R and of those who did not say that they would vote for R. 5 percent actually voted for R. What percent of the group voted for R?
Last year Jackie saved 5% of her annual salary. This year, she made 10% more money and saved 8%. The amount saved this year was what percent of the amount saved last year?
এক কিলোমিটার এক মাইলের কত অংশের সমান?
If a 60 ml of water contains 20% of chlorine, how much water must be added in order to create a 12.5% chlorine solution?
The price of one kilogram (kg) sugar is \(175\%\) of the price of one kg salt. If 7 kgs of sugar and 5 kgs [of salt are purchased for a total of BDT 690, what is the difference in price between 2 kgs of salt and 1 kg of sugar?]
If (a+b+c)/4= (a+b)/3, then what is the value of c?
Three partners A, B, C invest Tk.26000, Tk.34,000 and Tk.10000 respectively in a business. Out of a profit of Tk. 3500, B's share is
In a certain apartment building exactly 1/3 of the apartments have two bedrooms and exactly 1/7 of the two-bedroom apartments are front apartments. Which of the following could be the total number of apartments in the building?
Anwar has 4 pens and pencils and Anis has 6 pencils. How many pens should Anwar give to Anis so that the ratio of pen to pencil for both of them becomes the same?
If a 60 ml of water contains 20% of chlorine, how much water must be added in order to create a 12.5% chlorine solution?
If two times of the daughter's age in years is included to the mother's age, the total is 70 and if two times of the mother's age is included to the daughter's age the total is 95. So the Mother's age is -
Mr. Karim traveled from A to B at a speed of 3 km/hr and returned from B to A at a speed of 5 km/hr. the round trip required 8 hours what was the distance between A and B in km?
The average of 8 consecutive odd number is 24. What is the first number in the series?
What is the greatest of consecutive integers Whose sum is 24?
If 2n=n2, then which of the following must be true?
A straight fence is to be constructed from posts 6 inches wide and separated by lengths of chain 5 feet long. If a certain fence begins and ends with a post, which of the following could not be the length of the fence in feet? (12 inches =1 foot)
Monti always jogs to school at a speed of 6 kilometers per hour, and walks home along the same route at a speed of 3 kilometers per hour. If he spends exactly one hour total traveling both ways, how many kilometers is his school from his home?

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The cost of 4 pens is equal to the cost of 6 pencils. The cost of a CD is equal to the cost of 4 pencils and the cost of a book is equal to the cost of 6 pens. What is the ratio of the cost of a book to the cost of a CD?