Find the value of $$ (2 {1\over6}+1 {13\over18}-{1\over6}) × {16÷4}$$

A buys a water cooler at some price and sells it to B at 20% profit. B sells it to C at 10% profit. If C bought it for Rs 6666, then B's cost price is

The simple interest on an amount of 2,800 at the end of 3 years is Rs 420. What will be the simple interest at Rs 3200 for the same rate and for the same period?

If A : B= 3:4, B: C = 2:3 then A+B : B+C: C+A =?

If 4A=6B =5C; then A:B:C is

A total of 57 sweets were distributed in 10 children in such a way that each girl got 6 sweets and each boy got 5 sweets. The number of boys is:

The cost price of an article is Rs. 480. If it is sold at a profit of 12.5 percent, what will be the selling price of the article?

If the least common multiple(LCM) of two numbers is 231, the Highest common multiple(H.C.F)  of both numbers is 11 and the first number is 77, then the second number is