Question

OR बैलैनोग्लासेंस के पाचन तंत्र का वर्णन कीजिए। Describe the digestive system of Balanoglo​

Answer 1

SolutioN :-

Let the speed of the stream be x km/h.

so, speed of boat in downstream is ( 11 + x )

and also speed of boat in upstream is ( 11 - x )

Distance cover by boat is 12 km.

The speed of boat in still water is 11 km/h

\boxed{\tt \bullet \: \: \: Distance = Speed \times Time.}

∙Distance=Speed×Time.

\begin{gathered} \tt \rightarrow \dfrac{12}{11 - x} + \dfrac{12}{11 + x} = 2 \times \dfrac{3}{4} \\ \\ \end{gathered}

→

11−x

12

+

11+x

12

=2×

4

3

\begin{gathered} \tt \rightarrow \dfrac{12}{11 - x} + \dfrac{12}{11 + x} = \dfrac{11}{4} \\ \\ \end{gathered}

→

11−x

12

+

11+x

12

=

4

11

\begin{gathered} \boxed{\tt \bullet \: \: \: {a}^{2} + {b}^{2} = (a + b)(a - b)} \\ \\ \end{gathered}

∙a

2

+b

2

=(a+b)(a−b)