৭৩৪১
A person's present age is two - fifth of the age of his mother. After 8 years. he will be one half of the age of his mother. What is the present age of the mother?
উত্তর
40
৭৩৪৩
On a 2 km road, a total of 201 tress are planed on the side of the road at equal distance. How many such trees will be planed on a50 k.m road such that the distance between two consecutive tress is the same as that of the consecutive trees on the 2k.m road?
উত্তর
5001
৭৩৪৪
Two small circular parks of diameter 16 meter and 12 meter are to be replaced by a bigger circular park. What would be the radius of this new park, if the new park has to occupy the same space as the two small parks?
উত্তর
10 meter
৭৩৪৫
Mr. X had Tk. 1000 in his savings account. Every month in the first week he needs money, so he withdraws Tk. 500, but by the end of the month , he deposits Tk. 750. After how many months, the original amount will grow three times?
উত্তর
8 months
৭৩৪৬
At a stationary shop, it costs Tk. 185 for 4 gel-pen, 8 ball -point pens and 1 marker pen and Tk. 315 for 7 gel-pens, 15 ball point pens and 1 marker pen. What would be the cost of 1 gel-pen, 1 ball -point pen and 1 marker pen?
উত্তর
Tk. 55
৭৩৪৭
The average of 10 numbers is 40.2. Later it is found that two numbers have been wrongly added. The first one is 18 greater than the actual number and the second number added is 13 instead of 33. Find the correct average-
উত্তর
40.4
৭৩৪৮
In a certain population group, 57% of the people have characteristics, X and 63% have characteristics Y. If every person in the group has at lest what percent of the people have both X and Y?
উত্তর
20%
৭৩৪৯
M is older than N but younger than O. If m, n and o are the ages of M, N and O respectively, then which of the following is true?
উত্তর
n<m<o
৭৩৫০
A merchant has 1000 kg of sugar, part of which he sells at 8% and the remaining at 18% profit. He gains 14% on the whole. Find the quantity of sugar that he sold at 18% profit.
উত্তর
600kg