The average age of boys in the class is twice the number of girls in the class. If the ratio of boys and girls in the class of 36 be 5:1, what is the total of the ages of the boys?

A. 490

B. 196

C. 420

D. 360

E. 240

Poster Download

EWUSPRINGমানসিক দক্ষতা(IQ)গাণিতিক সমস্যাIQ-4 (Topic Practice)EWU - ⚡ অনলাইন প্রশ্নব্যাংক দেখুন 💥

সঠিক উত্তরঃ D. 360

Explanation:

Class Student = 36 So, Number of Girls= 1/6x36 = 6 So, Average age of boys = 6x2= 12 Class এ 6 জন ছাত্রী সুতরাং বাকি 36-6-30 জন ছাত্র So, Total Age of the boys- 30x12=360. Answer 360.

Six men can earn as much as eight women, two women can earn as much as three boys and four boys can earn as much as five girls. If a girl can earn Tk. 50 a day, what amount can a man earn in a day?
দুইটি ক্রমিক সংখ্যার বর্গের পার্থক্য ১৯। তার মধ্যে একটি সংখ্যার বর্গমূল ৩ হলে অন্যটি কত?
একটি ঝুড়িতে আপেল এবং কমলা মিলিয়ে ৩৩টি ফল আছে। প্রতিটি আপেল এবং কমলা ১৮ টাকা দরে কেনা হয়েছে। সবগুলো ফল কিনতে যদি ৫৯৪ টাকা খরচ হয় এবং আপেল এর চাইতে ৫টি কমলা কম থাকে তবে ঝুড়িতে কয়টি আপেল ছিল?
A works twice as fast as B. If B can complete a work in 12 days independently, the number of days in which A and B can together finish the work is:
If, x+y>4 and x1 is true
n denotes the number obtained when n is rounded to the nearest tenth. For example 4.31=4.3 0.089-1.135=
There are 12 men on basketball team , and in a game 5 of them play at any one time. If the game is 1 hour long and if each man plays exactly the same amount of time, how many minutes each man play?
If n is an integer such that when n is divided by 2, the remainder is 1, when n is divided by 3, the remainder is 2, and when n is divided by 4, the remainder is 3. What is the least possible value of n?
৫-এর কত শতাংশ ৭ হবে------
In the first 10 overs of a cricket game,the run rate was only 3.2.what should be the run rate in the reamaining 40 overs to reach the target of 282 runs?
The sum of three digits of a number is 10, The middle digit is equal to the sum of other two, and the number will be increased by 99 if the first and third digits be interchanged. What is the original number?
A vendor bought chocolate at 6 for a taka. How many for a taka must he sell to gain 20% ?
Running at the same constant rate, 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?
Sadman has two rectangular fields. The larger field has twice the length and four times the width of the smaller field. If the smaller field has area K, then the area of the larger field is greater than the area of the smaller field by what amount?
$x=y-(50/y)$, where x and y are both positive numbers. If the value of y is doubled, the value of x will.
যদি দুইজন টাইপিস্টের দুই পৃষ্ঠা টাইপ করতে দুই মিনিট সময় লাগে তাহলে ছয় মিনিটে আঠার পৃষ্ঠা টাইপ করতে কতজন টাইপিস্ট লাগবে?
সাকিবের ১০ ইনিংসের রানের গড় ৪৫.৫। ১১তম ইনিংসে কত রান করে আউট হলে সব ইনিংস মিলিয়ে তার রানের গড় ৫০ হবে?
A man buys some pens and pencils. The pen costs Tk. 7 each and the pencil costs Tk. 3 each. If the man spends exactly Tk. 81 and buys the maximum number of pen possible under these conditions, what is the ratio of pens to pencils?
In a recent survey among 362 BBA students of IBA, 281 students responded that they watch IPL or English Premier League or both. If 97 of these students do not watch IPL and a total of 204 students watch English Premier League, how many of these students watch both?
Quazi has a wheat business. He purchases wheat from a local wholesaler at a particular cost per pound. The price of wheat at his stores is $3 per pound. His faulty spring balance reads 0.9 pounds for a pound. Also, in the festival season, he gives a 10% discount on the wheat. He found that he made neither a profit nor a loss in the festive season. At what price (per pound) did Quazi purchase the wheat from the wholesaler?

লগইন করুন

একাউন্ট নির্বাচন করুন

গুগল একাউন্ট যুক্ত করুন

The average age of boys in the class is twice the number of girls in the class. If the ratio of boys and girls in the class of 36 be 5:1, what is the total of the ages of the boys?