১৫১০১
Arif bought 17 pens of three colors- black, green and red. They cost Tk. 5, Tk. 10 and Tk. 25 each respectively. The total amount that Arif paid was Tk. 205. If Arif bought twice as many green pens as red pens, how many black pens did he buy?
উত্তর
5
১৫১০২
Alam starts working on a job and works on it for 12 days and completes 40% of the work. Then Babu joins Alam and together they complete the rest of the work in 12 days. How long (in days) will it take Babu to complete the job if he works alone?
উত্তর
60
১৫১০৪
When x is divided by 7, the remainder is 6. Which of the following must be an even number?
উত্তর
x2 + x
১৫১০৬
A businessman has 1000 Kg of rice, part of which he sells at 8% profit and the rest at 18% profit. He gains 14% on the whole. How much Kg of rice did he sell at 18% profit?
উত্তর
600
১৫১০৭
The sum of three consecutive odd integers is 40 more than the first of the numbers. What is the middle number?
উত্তর
19
১৫১০৮
If Rahim walks at 14 km/hr instead of 10 km/hr for a certain time, he would have walked 20 km more. If Rahim walks at a speed of 10 km/hr, the distance travelled by him within that time is -
উত্তর
50 km
১৫১০৯
Pens that used to cost Tk. 150 for a package of 3 now cost Tk. 300 for a package of 5. What is the percent increase in the price of these pens?
উত্তর
20%
১৫১১০
A year ago the price of a toothbrush and the price of a comb were both Tk. 50. The price of the toothbrush was increased by 20% while the price of the com was decreased by 10%. What is the difference in Taka between the current price of the toothbrush and the comb?
উত্তর
15