WORD PROBLEMS WITH EQUATIONS

-Harry and Nicky share $120 but Nicky takes $58 more than Harry. How much does each person have?

-When Katy was 12, her father was three times her age. Now he is twice her age. How old is Katy now?

-a rectangle is 4cm longer than it is wide. Its perimeter is 64cm. Find its dimensions.

-Mark has 28 10-cent and 20-cent pieces. How many of each coin does he have if their total value is $4.30?

-In a class of 26, there are four more boys than girls. How many boys are there?

THIS IS THE PART OF MY HOMEWORK THAT I DON'T UNDERSTAND. PLEASE KINDLY SHOW ME THE WORKING OUT. THANK YOU SO MUCH.

1 answer

x + (x+58) = 120

Solve for x.

When Katy was 12, her father was 36 (3*12).

now 12 + x = 2(36+x)
Solve for x and add to Katy's age

2x + 2(x+4) = 64

I hope you can become aware of the process enough to do the remaining problems by yourself.