Question

Larry and Cathy study for a total of 24 hours each week. Larry studies 3 less than twice the hours than Cathy studies. How many hours does Cathy study per week?

Answer 1

• Let Cathy studies x hours
• Larry studies 2x-3hours

ATQ

`\\ \sf\longmapsto x+2x-3=24`

`\\ \sf\longmapsto 3x-3=24`

`\\ \sf\longmapsto 3x=24+3`

`\\ \sf\longmapsto 3x=27`

`\\ \sf\longmapsto x=9`

Answer 2

ᎪꪀsωꫀᏒ

9 hours Cathy study per week

Explanation:

=> according to the question

➪ x+2x-3=23

➪ 3x-3=24

➪ 3x=24+3

➪ 3x=27

➪ x= 27/3

➪ x= 9