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Zorluk: OrtaFractions, Decimals, and Percentages

A municipal solar power facility distributes its total generating capacity among three sectors: residential, commercial, and municipal. The residential sector is allocated 715\frac{7}{15} of the total capacity, and the commercial sector is allocated 36%36\% of the total capacity. The remaining 2626 megawatts (MW) of capacity is allocated to municipal buildings. What is the total generating capacity, in megawatts, of the facility?

Cevap: 150 megawatts

Cevap

The total generating capacity of the facility is 150 megawatts.
The residential portion (715\frac{7}{15}) and commercial portion (36%=92536\% = \frac{9}{25}) combine to equal 6275\frac{62}{75} of the total capacity. The municipal portion makes up the remaining 1375\frac{13}{75} of the total, which is given as 2626 MW. Setting 1375T=26\frac{13}{75} T = 26 and solving yields T=150T = 150 MW.

Adım Adım Çözüm

1
Convert the commercial percentage into a simplified fraction.
36%=36100=92536\% = \frac{36}{100} = \frac{9}{25}
Converting all proportions to fractions allows for direct operations.
2
Find the combined fraction of capacity allocated to residential and commercial sectors.
715+925=3575+2775=6275\frac{7}{15} + \frac{9}{25} = \frac{35}{75} + \frac{27}{75} = \frac{62}{75}
Finding a common denominator (7575) allows adding the two fractional parts.
3
Find the fraction corresponding to the remaining municipal portion.
16275=13751 - \frac{62}{75} = \frac{13}{75}
Subtracting the allocated fraction from 11 yields the unallocated fractional portion.
4
Calculate the total capacity by setting up a linear equation.
1375×Total=26    Total=26×7513=150\frac{13}{75} \times \text{Total} = 26 \implies \text{Total} = 26 \times \frac{75}{13} = 150
Multiplying the known remaining value by the reciprocal of its fraction gives the whole total.

Anahtar Kavram

Combining fractions and percentages to find an unknown total amount.
Tahmini Süre:1m 30s
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