ArithmeticQuestion 392 of 550

A girl saves 50 SAR in the first week, and each week she saves 10 SAR more than the week before. How much does she save in 8 weeks?

  1. 640 SAR
  2. 560 SAR
  3. 720 SAR
  4. 680 SAR
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Correct answer: 680 SAR

The amounts are 50, 60, ..., 120. The mean = (50 + 120) ÷ 2 = 85. The total = 85 × 8 = 680 SAR.

Test structure: ETEC guide to the GAT

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Questions last reviewed: 21 October 2026