Question

If 15 men make 234m long wall, then what is the length of wall
made by 35 men:

Answer 1

Answer:

15 men make : 234m long wall

35 men make : ?

= 1 men make : 234÷15 = 15.6m

= 35 men make = 15.6×35 = 546m

= length of wall made by 35 men = 546m

Answer 2

Step-by-step explanation:

Numberofmenincreases,thelength

ofthewallmadeincreases.

\begin{gathered} Clearly , number \: of \:men \: directly \: varies\\with \:the \: length \: of \: the \: wall \: made \end{gathered}

Clearly,numberofmendirectlyvaries

withthelengthofthewallmade

\begin{gathered} So, \frac{x_{1}}{y_{1}} = \frac{x_{2}}{y_{2}}\\ < /p > < p > Here, \: x_{1} = 15 \: men, \: y_{1} = 234 \: m \\ < /p > < p > x_{2} = 35 \: men, \: y_{2} = \red{?}\: m\end{gathered}

So,

y

1

x

1

=

y

2

x

2

</p><p>Here,x

1

=15men,y

1

=234m

</p><p>x

2

=35men,y

2

=?m

\begin{gathered} By \: substituting , \\\frac{15}{234} = \frac{35}{y_{2}}\end{gathered}

Bysubstituting,

234

15

=

y

2

35

\begin{gathered} \implies y_{2} = 35 \times \frac{234}{15} \\= \frac{8190}{15} \\= 546 \:m \end{gathered}

⟹y

2

=35×

15

234

=

15

8190

=546m