Register
Erica could do 10 math problems in 20 minutes. Penny could do 15 math problems in 25 minutes. If they worked together, how many minutes would it take Erica and Penny to do 30 math problems?
167k views
12 votes
Erica could do 10 math problems in 20 minutes. Penny could do 15 math problems in 25 minutes. If they worked

together, how many minutes would it take Erica and Penny to do 30 math problems?

User Piggybox
by
8.1k points

1 Answer

8 votes
it’ll take erica 60 minutes (an hour) to do 30 math problems and it’ll take penny 50 minutes to do 30. but together, it should take about 45-55 minutes to do 30
User James Addison
by
7.8k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

8.6m questions

11.2m answers

Other Questions

How do you can you solve this problem 37 + y = 87; y =
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
Link Copied!