Ling wants to save $87 for tickets to a rock concert if she has $23 now and will save $4 per week how long it take her to get enough money to buy the tickets

In this case we have that the total cost of the tickets is $87.If she is $23, then she is missing:

He is missing $64.

If you can save $4 per week we have:

Where "x" represents the number of weeks to work:

So, Ling must work at least 16 weeks to get the money he needs for concert tickets.

16 weeks

what is the original number? you forgot to add it.

she will sew have sewn five dresses   and be 1/3 done with the sixth one in an hour.

step-by-step explanation:

3/4 of an hour=45 mins

lucy makes 1 dress per 11.25 minutes

45 mins+11.25 mins=56.25 mins

60 mins- 56.25 mins=3.75 mins

3.75 mins is 1/3 of of 11.25 mins

therefore she the other 1/3 would be part of the hour and she will have sewn 5 dresses and begun the sixth.

contact me if you have any questions you are welcome.