For the following questions answer them individually
A can complete a certain task in 18 days, B in 27 days and C in 36 days. A, B and C began to work together, but A left 4 days before and B left 6 days before the completion of the task. For how many days did B work?
The LCM of two numbers is 12 times their HCF. If one of the numbers is 15 and the sum of the HCF and LCM is 65, then find the other number.
If 45% of a number is equal to two-third of another number, what is the ratio of the first number to the second number?
In a class of 45 students, the average age of the class is 18 years. The average age of 35 students is 15. What is the average age of the remaining 10 students?
If $$(x + y): (x - y) = 23 : 3$$ , what is the value of $$\frac{x^{2}-y^{2}}{x^{2} + y^{2}}$$?
The following sentence has been split into four segments. Identify the segment that contains a grammatical error.
Iron is / most useful / than any / other metal.
Select the option that can be used as a one-word substitute for the given group of words.
Song which is sung in a church by a group of singers
Select the option that can be used as a one-word substitute for the given group of words.
Twice a month
