Answer:
Explanation:
let us assume Anna has x tissues and peter has y tissues
according to question, anna has 3 times more tissues than peter ,means it can be represented as
x=3y....(consider it as equation 1)
furtherly it also stated in question that if anna get 3 more tissues she would have 100.
this means it can be written as x+3=100( consider it as equation 2)
from equation 1 and 2 we can substitute the value of x in equation 2
3y+3=100
3y=97
y=32.333(round it to nearest whole number ) which is 32
so we got value of y as 32
substitute this y value in equation 1
x=3y
x=3*32
x=96
so anna has 96 tissues and peter has 32 tissues