Advanced Mathematics Primary 4 Data Analysis

Siti recorded her savings (in $) over 6 months. The amounts were: January $50, February $70, March $60, April $90, May $80, and June $110. Between which two consecutive months did her savings increase the most?

A March to April
B February to March
C January to February
D April to May
Show Worked Solution

Worked Solution

Step 1: Calculate the change between each pair of consecutive months. Jan→Feb: $70 − $50 = +$20 Feb→Mar: $60 − $70 = −$10 (decrease) Mar→Apr: $90 − $60 = +$30 Apr→May: $80 − $90 = −$10 (decrease) May→Jun: $110 − $80 = +$30 Step 2: The greatest increase is $30, which occurred March to April. Answer: March to April.

Correct answer: March to April

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