Help?

Answer: 35

We can set up an equation based on the problem:

x=value we are tring to find

$\frac{120}{100}*x=42$

$\frac{6}{5}*x=42$

$6*x=210$

$x=\frac{210}{6}$

$x=35$

What number results when 42 is increased by 120%?    

42 x 120%  =  42 x 1.20  =  35           

                      So, start with 42    

               and increase it by 35      ( "increase" means make it bigger )   

                                   total  77    

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