Maths-

General

Easy

Question

# For Christmas, Maryland purchased subscriptions to Xbox Live for her four children. Each subscription costs $5 per month plus a $15 sign-up fee. If she received a bill for $120, for how many months did she purchase subscriptions for her children?

## The correct answer is: x = 3

- Hint:

○ Form the eqaution using given information.

○ Take variable value as any alphabet.

○ Take terms with cofficient at one side and without cofficients at another side.

- Step by step explanation:

○ Given:

Sign up fee per subscription = $15.

Subscription cost per month = $5.

Total subscription purchased = 4

Total bill = $120.

○ Step 1:

Let Maryland purchase membership for x months.

So,

Bill for 1 month for 1 child = sign up fee + monthly cost

Bill for 1 month for 1 child = 15 + 5

Bill for x month for 1 child = 15 + 5x

Hence,

Bill for x month for 4 child = ( 15 + 5x ) 4

Bill for x month for 4 child = ( 60 + 20x )

○ Step 2:

○ As total bill is $120.

∴ 60 + 20x = 120

20x = 120 - 60

20x = 60

x =

x = 3

- Final Answer:

Hence, Maryland purchase 3 month subscription for childen.

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