🚀 Space Math Explorers

TEACHER-GUIDE-VERIFIED · TG-V9-042

7. Solar-array power falls from 8.0 kW to 6.6 kW. Find percent decrease.

Verified solution

Solution: Decrease=1.4 kW. Percent=1.4/8.0 x 100%=17.5%.

Source: Teacher Guide V9 · English V9. Match the numbers and wording in your printed question before using this solution.

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VIDEO HELP · TG-V9-042

Find a Solar Array’s Percent Decrease (TG-V9-042)

Find the loss from 8.0 kW to 6.6 kW: 1.4 kW. Divide by the original 8.0 kW to obtain a 17.5% decrease, then check that 82.5% remaining gives 6.6 kW.

Space Math Explorers · approved worked example · 1:28 · Watch on YouTube

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These pages reproduce verified solution steps for the registered V9 questions. It does not diagnose learning needs or replace instruction from a qualified teacher or tutor.