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ACCORDING TO THE WATER CHARGE RATE …

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ACCORDING TO THE WATER CHARGE RATE , MINIMUM CHARGE UP TO 27 UNITS IS RS 1910 AND 71 PER UNIT EXCEEDING 27 UNITS. Nikhil PAID THE WATER BILL OF BHADRA MONTH RS 28,363.20 INCLUDING 20 percent fine. if THE PRESENT READING ON THE BILL IS 4,777 THEN FIND THE FORMER READING.
  • 2 answers

Rajan Kumar Pasi 4 years, 5 months ago

Sol: Let the no. of extra units = x
   Thus,

 {tex}\text {Let the original bill = y Rs.}\\ \text {Therefore, Original amount+ 20% fine = 28363.20}\\ \text {=> y + 20% of y = 28363.20}\\ \text {=> y + }{\frac{20}{100}}\times \text{ y = 28363.20}\\ \text {=> }{\frac{120}{100}}\times \text{ y = 28363.20}\\ \text {=> }{\frac{6}{5}}\times \text{ y = 28363.20}\\ \text {=> }\text{ y = }{28363.20\times {\frac{6}{5}}}\\ \text {=> y = }\boxed{23636 Rs.}\\ Now, {=> \ 1910 + 71\times x = 23636}\\ {=> \ 71\times x = 23636-1910}\\ {=> \ 71\times x = 21726}\\ {=> \ x = \frac{21726}{71}}\\ {=> \ x = \boxed{306}}\\{/tex}

So, the Former reading of the meter was = 4777 - 306 = {tex}\huge {\boxed{4471} \ units.} \\ All \ the\ best\ :-)...{/tex}

Arpita Dixit Dixit 5 years, 1 month ago

Yy8
http://mycbseguide.com/examin8/

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