The total sale of a shop for (8) weeks is (440) items. If the sale increases by (10) items every week then what was the sale in the first week?
Answer and explanation
Correct answer: (20)
Using (S_8=440) and (d=10) gives (a=20). Exam tip: solve the sum formula for the unknown first term.
Frequently asked questions
What is the correct answer to this question?
(20)
Why is this the correct answer?
Using (S_8=440) and (d=10) gives (a=20). Exam tip: solve the sum formula for the unknown first term.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Arithmetic Progressions (AP). Topic: Word problems based on APs.
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