Question

The cost of three machines are given below.


Select the machine whose cost can be divided equally in nine equal installments.

• A. Machine A
• B. Machine B
• C. Machine C
• D. Cannot be determined

Answer 1

The correct option is A Machine A

The cost of three machines are given below.


We have to choose the machine whose cost can be divided equally in nine installments.

So, the divisibility rule of 9 is:
If the sum of all the digits of a number is divisible by 9, then the number is divisible by 9.

Cost of Machine A is $\$$126.
Let us check if it is divisible by 9.


∴ We can choose machine A.

Cost of Machine B is $\$$221.
Let us check if it is divisible by 9.


∴ We can't choose machine B.

Cost of Machine C is $\$$137.
Let us check if it is divisible by 9.


∴ We can't choose Machine C.

Since the cost of Machine A can be divided equally in 9 equal installments, Machine A should be selected.