Question
'A' varies directly as 'B'. If at 'A' = 25, value of 'B'
is 40, then find the value of 'A' at 'B' = 96.Solution
ATQ;
A = k X B {Where 'k' is some constant}
So, 25 = k X 40
Or, k = (5/8)
So, A = (5/8) X 96 = 60
The ratio of the incomes of Vineet and Vidya is 12:7 respectively. Vineet saves 25% of his income while Vidya saves 20% of his income. The sum of their ...
The ratio of the two numbers is 4:11. 120% of the first number is equal to the 70% of the second number. Find the sum of both the numbers.
Marks scored by A and B in a test are in the ratio 12:5 respectively. If B had scored 5 more marks, then marks scored by A would be 20% more than that o...
The number of students in a school is 3247. If the ratio between boys to girls is (x+3) : (x+4), then find the value of x.
In an office, the ratio of the number of males to number of females is 11:8. If 3 males joined the class and 6 females left the class, then the ratio of...
The ages of A, B and C are in the ratio of 4:3:6 respectively. If the sum of their ages is 65 years, then find the age of B.
Rs.12000 was divided among A, B and C in the ratio 3:4:5. B kept Rs.1500 for himself, gave Rs.500 to his mother and divided the remaining money among hi...
Two years ago the ratio of annual salary of three friends P, Q and R is 4 : 3 : 5. Every year since then the salary of P, Q and R increases by 10%, 12% ...
Marks scored by A and B in a test are in the ratio 15:7 respectively. If B had scored 10 more marks, then marks scored by A would be 25% more than that ...
What is the fourth proportional to 10¹⁵, 2⁶ and 5⁶?