Câu 6:
We have: `5` : `0,5` = `10`
So, the number of bricks needed to pave the length of the room is: `10` bricks.
We have: `3,8` : `0,5` = `7` (remainder `0,3`)
So, the number of bricks needed to pave the width of the room is: `8` bricks.
So the number of bricks needed to pave the room is: `10` × `8` = `80`
Answer: `80`
Câu 5 bạn sai nên mình xin chữa giùm luôn nha!:
Buy `5` tickets get `1` extra ticket, so to get `6` tickets, you need to pay the minimum amount:
`5 000` × `5` = `25 000` (dong)
We have: `32` : `6` = `5` (remainder `2`)
So, a class of `32` students need to pay the amount to have enough tickets for the whole class is:
`5` × `25 000` + `2` × `5 000` = `135 000` (dong)
Answer: `135 000` dong
Cho mình xin hay nhất nha bạn!!!!!
@Drew Mclntyre