A number when multiplied by 21 is increased by 420. Find the number-
Find the sum of first 50 terms in the series: (5+3-7)+(5+3-7)
Product of two numbers is 162. If the greater number is 2 times the smaller number, what is the grater number?
√27+√75=?
2700 chocolates were distributed among the students of a class. If each students got 3 times as many chocolates as the number of students in the class, find the number of students in the class.
If A/2=B/3=C/4, then A : B : C=?
The ages of A and B are in the ratio of 8 : 5. If the sum of their ages is 39 years, what will be the ratio of their ages after 9 years?
If rate of income tax is increased from 20% to 25%, find the additional amount of tax a person has to pay, if his total income is Tk. 40,000.
In an examination, a student has to secure 40% marks to pass. One student got 40 marks and failed by 40 marks. What was the total marks in the examination?
A fruit seller sells 30% apples and still has 630 apples in the stock. How many apples had he bought?
If A's salary is 110% of B's salary is 80% of C's find salary, if A's salary is Tk. 440.
On selling an article for a certain price, a man loses 30%. What is his loss/profit percent, if lie sells the article for double the price?
Area of a square filed is 729 square meter. Find its parameter.
A man sold a horse at 10% profit. Had he bought it at 20% less and sold for Tk. 10 more, he would have made a profit of 40%. What is the cost price of the horse?
A and B can do a piece of work in 12 days while A alone can do it in 20 days. How long will B alone take to finish the work?
IfA2=B3=C4, than A:B:C=?
According to the figure, travelling directly form point A to B. rather than point A to point C and then from point C to point B, would save how main miles?
27+25=?
On subtracting 5 from one-fifth a number, the result is 10. What is the number?
A man's expenditure on food is 3/5 of his expenditure on clothes; find the ratio between his expenditure on food and cloth.