The family in the data-use graph has a plan that includes 50 GB a month; each GB beyond that in a month costs ₹10. How much did the family pay for extra data over the six months? Line graph titled A family's mobile data use. Data used: January 40 GB; February 45 GB; March 54 GB; April 60 GB; May 48 GB; June 72 GB.

The family in the data-use graph has a plan that…

The family in the data-use graph has a plan that includes 50 GB a month; each GB beyond that in a month…

Question 55

HardOriginal question

The family in the data-use graph has a plan that includes 50 GB a month; each GB beyond that in a month costs ₹10. How much did the family pay for extra data over the six months?

Line graph titled A family's mobile data use. Data used: January 40 GB; February 45 GB; March 54 GB; April 60 GB; May 48 GB; June 72 GB.

₹190Correct answerYour answer₹220Correct answerYour answer₹320Correct answerYour answer₹360Correct answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer D

Correct answer: D

Months above 50 GB: March (54), April (60) and June (72).
Extra GB: $4 + 10 + 22 = 36$ GB.
Cost: $36 \times 10 = 360$ , that is ₹360.

Worth noting

₹320 misses March, when use of 54 GB went 4 GB over. ₹220 counts only June. ₹190 subtracts the unused GB of the low months, but unused data is not refunded.

Concept: Counting only the excess above a threshold
Typical timeTypical: 120 s
Your timeYours: —

The rule this testsLine graphs

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Ten questions from Data Interpretation, at your own pace.

Practise this chapter →

Ten questions from Data Interpretation, at your own pace.

The family in the data-use graph has a plan that includes 50 GB a month; each GB beyond that in a month…

Question 55

Explanation