A 60 litre mixture of sugar and water contains sugar and water in the ratio 2:3. How many litres of the mixture should be replaced by sugar so that the ratio of sugar and water become 1:1?
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 Th 205. If Arif bought twice as many green pens as red pens ,how many black pens did buy ?
If 7> x > 2 and 3 < x < 8, which of the following best describes x ?
When x is divided by 7, the remainder is 6.Which of the following must be an even number ?
A businessman has 1000 Kg of rice,part of which he sells at 8% profit and the rest at 185% profit . He gains 14% on the whole . How much Kg of rice did he sell at 18% profit ?
The sum of three consecutive odd integers is 40 more than the first of the numbers.What is the middle number ?
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 --
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 ?
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 comb was decreased by 10%.What is the difference in Taka between the current price of the toothbrush and the comb ?
When the positive integer n is divided by 5, the remainder is 2.Which of the following must be true ?
If x/z is 1 more then y/z, then y= ?
Apu took 3/5 of the marble kept in a box. His younger took another 3/5 of the remaining marbles.Then his sister took another 3/5 of remaining marbles. What fractions of the marble are left in the box ?
The average daily wages of female worker in a factory is Tk. 30 and that of male workers is Tk.42 .If the average wages of all the woekers is Tk.37, what is the ratio of male to female workers ?
Alam starts working on a job and works on work. Then babu joins Alam and together they complete the est of the work in 12 days . How long (in days) will it take Babu to complete the job if he works alone ?
If -3≤x≤5 and -5≤y≤3,what is the smallest value of 2x-y?