১৩৬১১
A person buys certain number of marbles at 20 per taka and an equal number at 30 per taka. He mixes them and sells them at 25 per taka. His gain or loss in the transaction is-
উত্তর
4% loss
১৩৬১২
The simple interest on a sum of money at 8% per annum for 6 years is half the sum. the sum is-
উত্তর
Data is inadequate
১৩৬১৩
A school has only three classes having 20, 30 and 40 students respectively. The percentages of students passed are 30%, 50% and 60% respectively. The percentage of passed students in the entire school is -
উত্তর
50
১৩৬১৪
A plane traveling at 600 miles per hour is heading for Chittagong airport. At 3.58 pm it was 30 miles from the airport. At what time it will arrive at the airport?
উত্তর
4.01 pm
১৩৬১৫
If a 240-metre-long metro rail passes a pole in 24 seconds, how long will it take to pass a 650-metre-long platform?
উত্তর
89 seconds
১৩৬১৬
The daily rate for a hotel room that sleeps 4 people is Tk. 390 for one person and X taka for each additional person. If 3 people take the room for one day and each pays Tk 210 for the room, then what is the value of X?
উত্তর
120
১৩৬১৭
The value of a machine is Tk.6250. Its value decreases by 10% during the first year, 20% during the second year and 30% during the third year. What will be the value of the machine after 3 years?
উত্তর
3150
১৩৬১৮
The average temperature for the first 4-days of a week is 40.2º C and that of the last 4-days is 41.3° C. If the average temperature for the whole week is 40.6° C, then temperature on the fourth day is-
উত্তর
41.8° C
১৩৬১৯
If the radius of a circle is increased by 100%, by what % is the area of the circle increased?
উত্তর
300%
১৩৬২০
What would be the measure of the perimeter of a square whose area is equal to 256 square cm?
উত্তর
64 cm