Amir is a window cleaner. He uses the following formula to calculate the amount to charge his custom

Question

Amir is a window cleaner. He uses the following formula to calculate the amount to charge his customers: Charge = Rs 20+4n, where n is the number of windows a house has. If a house has 7 windows, how much would Amir charge?

Accepted Answer

{"content":[{"content":[{"text":"Step 1 (Understand the Formula):","type":"text","marks":[{"type":"bold"}]},{"text":" Amir's charge formula is:","type":"text"}],"type":"paragraph"},{"attrs":{"latex":"\text{Charge} = 20 + 4n"},"type":"math_block"},{"type":"paragraph","content":[{"text":"where ","type":"text"},{"type":"math_inline","attrs":{"latex":"n"}},{"text":" is the number of windows.","type":"text"}]},{"content":[{"marks":[{"type":"bold"}],"text":"Step 2 (Substitute the Value):","type":"text"},{"text":" We are given that the house has ","type":"text"},{"attrs":{"latex":"7"},"type":"math_inline"},{"type":"text","text":" windows, so "},{"attrs":{"latex":"n = 7"},"type":"math_inline"},{"text":". Substituting:","type":"text"}],"type":"paragraph"},{"attrs":{"latex":"\text{Charge} = 20 + 4(7)"},"type":"math_block"},{"attrs":{"latex":"\text{Charge} = 20 + 28 = 48"},"type":"math_block"},{"content":[{"marks":[{"type":"bold"}],"text":"Step 3 (Conclusion):","type":"text"},{"text":" Amir would charge exactly ","type":"text"},{"marks":[{"type":"code"}],"text":"48","type":"text"},{"text":" Rs.","type":"text"}],"type":"paragraph"}],"type":"doc"}

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