Hứa 5 sao và ctlhn. Mary and Peter have 80 stickers. Peter has stickers three times as many as Mary has.
How many stickers each of them has?
Hứa 5 sao và ctlhn. Mary and Peter have 80 stickers. Peter has stickers three times as many as Mary has.
How many stickers each of them has?
Mary has the number of books: 80: (3 + 1) = 20 (book)
Peter’s number of books : 80-20 = 60 (book)
Give Mary’s stickers are `x (x>0)`
Peter’s stickers are `3x`
Mary and Peter have `80` stickers so
`x+3x = 80`
`4x = 80`
`x = 20`
⇒ `3x = 3×20 = 60`
Therefore , Mary has `20` stickers
Peter has `60` stickers