If x = y = 2z and xyz = 256 then what is the value of x?
(1/10) 18 - (1/10)20=?
The length of a rectangle is increased by 25%. What percentage should the width be decreased so that the area of the rectangle remains unchanged?
A goat is tied to one corner of a square plot of side 12m by a rope 7m long. Find the area it can graze?
Mr. Ali decided to walk down the escalator of a tube station. He found that if he walks down 26 steps, he requires 30 seconds to reach the bottom. However, if he steps down 34 stairs he would only require 18 seconds to get to the bottom. If the time is measured from the moment the top step begins to descend to the time he steps off the last step at the bottom, find out the height of the stair way in steps?
The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member?
The product of two numbers x and y is twice the sum of the numbers. What is the sum of the reciprocals of x and y?
In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the run rate in the remaining 40 overs to reach the target of 282 runs?
In order to obtain an income of Tk. 650 from 10% stock at Tk. 96, one must make an investment of :
Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?
Running at the same constant rate, 6 identical machines can produce a totoal of 270 bottles per minute. At this rat, how many bottles could 10 such machines produce in 4 minutes?
A and B invest in a business in the ratio 3 : 2. If 5% of the total profit goes to charity and A's share is Tk. 855, the total profit is :
Three partners shared the profit in a business in the ratio 5 : 7 : 8. They had partnership for 14 months, 8 months and 7 months respectively. What was the ration of their investments?
There is 60% increase in an amount in 6 years at simple interest. What will be the compound interest of Tk. 12,000 after 3 years at the same rate?
A bank offers 5% compound interest calculated on half-yearly basis. A customer deposits Tk. 1600 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is :
Two numbers are respectively 20% and 50% mor than a third number. The ratio of the two numbers is :
Point A is 10 miles West of point B. Point B is 30 miles North of Point C. Point C is 20 miles East of Point D. What is the distance between points A and D?
The product of two number x and y is twice the sum of the numbers . What is the sum of the reciprocals of x and y?
If (a -b) =3 and a2+b2=29, find the value of ab.
which is the shortest route from B to C .
The most economical way of going form city A to City B , in terms of toll and distance is to us the
Train can travel 50% faster than a car. Both start from point A at the same time and reach point B 75 kms away from A at the same time. On the way, however, the train lost about 12.5 minutes while stopping at the stations. The speed of the car is :
(110)110 18 -(110) 20 =?
If 2x - y = 4 then 6x - 3y = ?
A man buys Tk. 20 shares paying 9% dividend. The man wants to have an interest of 12% on his money. The market value of each share is :