Question

the monthly salary of A,B,C is in proportion of 2:3:5 if C's monthly salary is Rs.7200 more than that of A and B annual salary is​

Answer 1

Given:

✰ The monthly salary of A,B,C is in proportion of 2:3:5.

✰ C's monthly salary is Rs. 7200 more than that of A.

To find:

✠ B's annual salary.

Solution:

Let's understand the concept! First we will assume that the monthly salary of A,B,C are 2x , 3x and 5x respectively. Then, we know that C's monthly salary is Rs. 7200 more than that of A that means the monthly salary of C is Rs. 7200 added to A's salary. Like this, we will form a requisite equation and doing required calculations, we will find the value of x. After that, we will substitute the value of x in B's monthly salary. Then, we will find its monthly salary i.e, one month's salary. We know that 1 year has 12 months, so we will multiply its monthly salary by 12 to find it's annual salary.

Let's find out...!

Let the monthly salary of A, B and C be Rs. 2x, Rs. 3x and Rs. 5x respectively.

We know that C's monthly salary is Rs. 7200 more than that of A.

➛ C's monthly salary = A's monthly salary + 7200

➛ 5x = 2x + 7200

➛ 5x - 2x = 7200

➛ 3x = 7200

➛ x = 7200/3

➛ x = 2400

➙ B's monthly salary = 3x

➙ B's monthly salary = 3 × 2400

➙ B's monthly salary = Rs. 7200

Now,

⟹ B's annual salary = 12 × 7200

⟹ B's annual salary = Rs. 86,400

∴ The annual salary of B = Rs. 86,400

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