২৭০৬১
A mixture of 20 kg of sprit and water contains 10% water. How much water must she added to mixture to raise the percentage of water to 25%
উত্তর
6
২৭০৬২
X and Y start a business by investing a certain amount in the ratio 9: 16. Both of them invest for an equal period of time. At the end of the term , X's share of profit is what per cent less than that of Y?
উত্তর
4334
২৭০৬৩
The average attendance of a college for the first three days of a week is 325 and first four days is 320. How many were present on the fourth day?
উত্তর
305
২৭০৬৪
TK. 355 has been divided among A, B,C in such a way that a had TK. 20 more than B and C had Tk. 15 more than B and C had Tk. 15 more than A How much was C's share?
উত্তর
Tk. 135
২৭০৬৫
By what percentage above the cost price ,a fan should be sold if a shopkeeper wants to make a profit of Tk. 500 and the marked price of the article is TK. 6000 which is 50% above the cost price?
উত্তর
12.5%
২৭০৬৬
Out of two numbers, 4 times the smaller one is less than 3 times the larger one by 5, if the sum of the numbers is larger than 6 times their difference by 6, find the two numbers
উত্তর
59 and 43
২৭০৬৭
Pipe P can fill and empty tank in 4 hours but pipe Q can completely empty the same tank in 8 hours. But the pipes were opened alternately after every two hours starting with pipe P then in how many hours, the tank was completely filled?
উত্তর
10 hours
২৭০৬৮
The average age of A, B And C sis 30 years. If the difference between B's age and A's age is same as the difference between C's age and B's age. If D is 40 years older than B then what is the sum of the age B and D?
উত্তর
100 years
২৭০৬৯
In an office , 44% of the workers prefer coffee and 72% prefer tea. If each of them prefers coffee or tea and 40 like both, the total number of workers in the office is -
উত্তর
250
২৭০৭০
100 kg of solution A is mixed with 60 kg of solution B. If solution A has tin and copper in the ratio 1: 4 and solution B has lead and tin in the ratio 3:2 then what is the amount of tin in the new solution?
উত্তর
44 kg