Peter collected 9 times as many comics as Danny. When Peter gave Danny some of his comics, they each had 20. How many comics had Peter given to Danny?

Sturasion12345 Jan 16, 2022

#1**+1 **

Let Danny has 'x' comics

So, according to the question

Peter has '9x' comics

assume that Peter gave 'y' comics

to Danny

Therefore, 9x - y = 20 - (1)

x + y = 20 - (2)

adding equation (1) + (2)

10x = 40

x = 4

put the value of x in equation (2) we get

4 + y = 20

y = 20 - 4

= 16

So, the number of comics Peter gave to Danny

is 16

Slimesewer Jan 17, 2022