To solve this problem we can set up a proportion and cross multiply to solve for our unknown. 

\(\displaystyle \frac{1min}{60 sec}=\frac{3min}{x}\)

First we cross multiply. 

\(\displaystyle 1min(x)=3min(60sec)\) 

Then we divide each side by \(\displaystyle 1min\) to isolate the \(\displaystyle x\).

\(\displaystyle \frac{1min(x)}{1min}=\frac{3min(60sec)}{1min}\)

\(\displaystyle x=180 sec\)

To solve this problem we can set up a proportion and cross multiply to solve for our unknown. 

\(\displaystyle \frac{1min}{60 sec}=\frac{2min}{x}\)

First we cross multiply. 

\(\displaystyle 1min(x)=2min(60sec)\) 

Then we divide each side by \(\displaystyle 1min\) to isolate the \(\displaystyle x\).

\(\displaystyle \frac{1min(x)}{1min}=\frac{2min(60sec)}{1min}\)

\(\displaystyle x=120 sec\)

To solve this problem we can set up a proportion and cross multiply to solve for our unknown. 

\(\displaystyle \frac{1kg}{1,000 g}=\frac{7kg}{x}\)

First we cross multiply. 

\(\displaystyle 1kg(x)=7kg(1,000g)\) 

Then we divide each side by \(\displaystyle 1kg\) to isolate the \(\displaystyle x\).

\(\displaystyle \frac{1kg(x)}{1kg}=\frac{7kg(1,000g)}{1kg}\)

\(\displaystyle x=7,000g\)

To solve this problem we can set up a proportion and cross multiply to solve for our unknown. 

\(\displaystyle \frac{1kg}{1,000 g}=\frac{6kg}{x}\)

First we cross multiply. 

\(\displaystyle 1kg(x)=6kg(1,000g)\) 

Then we divide each side by \(\displaystyle 1kg\) to isolate the \(\displaystyle x\).

\(\displaystyle \frac{1kg(x)}{1kg}=\frac{6kg(1,000g)}{1kg}\)

\(\displaystyle x=6,000g\)

To solve this problem we can set up a proportion and cross multiply to solve for our unknown. 

\(\displaystyle \frac{1kg}{1,000 g}=\frac{5kg}{x}\)

First we cross multiply. 

\(\displaystyle 1kg(x)=5kg(1,000g)\) 

Then we divide each side by \(\displaystyle 1kg\) to isolate the \(\displaystyle x\).

\(\displaystyle \frac{1kg(x)}{1kg}=\frac{5kg(1,000g)}{1kg}\)

\(\displaystyle x=5,000g\)

To solve this problem we can set up a proportion and cross multiply to solve for our unknown. 

\(\displaystyle \frac{1kg}{1,000 g}=\frac{4kg}{x}\)

First we cross multiply. 

\(\displaystyle 1kg(x)=4kg(1,000g)\) 

Then we divide each side by \(\displaystyle 1kg\) to isolate the \(\displaystyle x\).

\(\displaystyle \frac{1kg(x)}{1kg}=\frac{4kg(1,000g)}{1kg}\)

\(\displaystyle x=4,000g\)

To solve this problem we can set up a proportion and cross multiply to solve for our unknown. 

\(\displaystyle \frac{1kg}{1,000 g}=\frac{3kg}{x}\)

First we cross multiply. 

\(\displaystyle 1kg(x)=3kg(1,000g)\) 

Then we divide each side by \(\displaystyle 1kg\) to isolate the \(\displaystyle x\).

\(\displaystyle \frac{1kg(x)}{1kg}=\frac{3kg(1,000g)}{1kg}\)

\(\displaystyle x=3,000g\)

To solve this problem we can set up a proportion and cross multiply to solve for our unknown. 

\(\displaystyle \frac{1kg}{1,000 g}=\frac{2kg}{x}\)

First we cross multiply. 

\(\displaystyle 1kg(x)=2kg(1,000g)\) 

Then we divide each side by \(\displaystyle 1kg\) to isolate the \(\displaystyle x\).

\(\displaystyle \frac{1kg(x)}{1kg}=\frac{2kg(1,000g)}{1kg}\)

\(\displaystyle x=2,000g\)

To solve this problem we can set up a proportion and cross multiply to solve for our unknown. 

\(\displaystyle \frac{1g}{0.001 kg}=\frac{7g}{x}\)

First we cross multiply. 

\(\displaystyle 1g(x)=7g(0.001kg)\) 

Then we divide each side by \(\displaystyle 1g\) to isolate the \(\displaystyle x\).

\(\displaystyle \frac{1g(x)}{1g}=\frac{7g(0.001kg)}{1g}\)

\(\displaystyle x=0.007kg\)

To solve this problem we can set up a proportion and cross multiply to solve for our unknown. 

\(\displaystyle \frac{1g}{0.001 kg}=\frac{6g}{x}\)

First we cross multiply. 

\(\displaystyle 1g(x)=6g(0.001kg)\) 

Then we divide each side by \(\displaystyle 1g\) to isolate the \(\displaystyle x\).

\(\displaystyle \frac{1g(x)}{1g}=\frac{6g(0.001kg)}{1g}\)

\(\displaystyle x=0.006kg\)