A certain number is divided by five, seven is added and the result is quadrupled to get a number 15 higher than the original number. What was the first number?
65
(x/5+7)*4=x+15 =>4x/5+28=x+15 => x/5=13 => x=65
We can write the following equation: ((x/5) + 7) times 4 = x + 15 , Solving this equation, x = 65
Saurabh was asked to find the average of first 'n' natural numbers. By mistake, he added a number twice but he didn't noticed it. As a result, he obtained a wrong average of 31.3. Find the number he added twice?
What number when added to itself, subtracted from itself, multiplied by itself and divided by itself, will add up to 22.09?
Of five consecutive multiples of three, the lowest is multiplied by two and four is added to give a number that is two thirds more than the average of the five numbers. What is the highest of the consecutive numbers?
