Math, asked by ankitkalwa951, 3 months ago

10.4 कि.ग्रा. 40 कि.ग्रा का कितना प्रतिशत है ?
(b) 24.6% (c)28%
(d) इनमें से कोई नहीं
(a) 26%

Answers

Answered by mathdude500
3

Answer:

\boxed{\bf \: (a) \:  \:  \: 26\% \: } \\

Step-by-step explanation:

हमे ज्ञात करना है की 40 कि. ग्रा. का कितना % 10.4 के बराबर है |

मान लेते है 40 कि. ग्रा का x % 10.4 ग्रा. के बराबर है ।

अतः

\sf \: x\% \:  \times  \: 40 = 10.4 \\

\sf \: \dfrac{x}{100}  \:  \times  \: 40 = 10.4 \\

\sf \: \dfrac{x}{10}  \:  \times  \: 4= 10.4 \\

\sf \: x= \dfrac{10.4 \times 10}{4}  \\

\sf \: x= \dfrac{104}{4}  \\

\implies\sf \: x = 26 \\

अतः 40 कि. ग्रा का 26 % 10.4 ग्रा. के बराबर है |

\rule{190pt}{2pt}

अतिरिक्त जानकारी

\begin{gathered}\: \: \: \: \: \: \begin{gathered}\begin{gathered} \footnotesize{\boxed{ \begin{array}{cc}  \bigstar \: \bf{ {(x + y)}^{2} =  {x}^{2}  + 2xy +  {y}^{2} }\:\\ \\ \bigstar \: \bf{ {(x - y)}^{2}  =  {x}^{2} - 2xy +  {y}^{2} }\:\\ \\ \bigstar \: \bf{ {x}^{2} -  {y}^{2} = (x + y)(x - y)}\:\\ \\ \bigstar \: \bf{ {(x + y)}^{2}  -  {(x - y)}^{2}  = 4xy}\:\\ \\ \bigstar \: \bf{ {(x + y)}^{2}  +  {(x - y)}^{2}  = 2( {x}^{2}  +  {y}^{2})}\:\\ \\ \bigstar \: \bf{ {(x + y)}^{3} =  {x}^{3} +  {y}^{3} + 3xy(x + y)}\:\\ \\ \bigstar \: \bf{ {(x - y)}^{3} =  {x}^{3} -  {y}^{3} - 3xy(x - y) }\:\\ \\ \bigstar \: \bf{ {x}^{3}  +  {y}^{3} = (x + y)( {x}^{2}  - xy +  {y}^{2} )}\: \end{array} }}\end{gathered}\end{gathered}\end{gathered}

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