Question

How do you translate word phrases "Cora`s age is less than trice what she was 10 years ago" into algebraic expressions?

Answer 1

I got: `c<3(c-10)`

Explanation:

I would call Cora's age `c` and write:
Cora's age`<` `3xx` (Cora's age `-10`)
or:
`c<3(c-10)`

Solved gives you:
`c<3c-30`
`c-3c<-30`
`-2c<-30`
change all signs:
`2c>30`
`c>15`