help math!

Elisabeti bikes from home to the grocery store and back to pick up in- gredients. On the way to the store, she averages 15 mph. Encumbered by groceries, she averages 10 mph on the way back. What is her average speed for the whole hour?

  1. 👍 0
  2. 👎 0
  3. 👁 153
  1. Here average speed is 12.5 mph.

    1. 👍 0
    2. 👎 0
  2. Her*

    1. 👍 0
    2. 👎 0
  3. AxenMO, if you cannot explain how to do the problem, you have not helped this student. Just giving the answer is very unhelpful.

    1. 👍 0
    2. 👎 0
  4. distance home to store = d
    total time = 1 hr

    d = 15 t
    d = 10(1-t)

    15 t = 10 -10 t
    25 t = 10
    t = 10/25

    d = 15* 10/25
    d = 6 miles each waay

    total distance = 12 miles
    total time = 1 hour
    so average speed = 12 miles per hour
    BY THE way AXENMO averaging the speeds them selves is NOT correct.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. math Help!!!!!!

    If Nicholas is located at (-3,2), what is the distance to get to the grocery store? Grocery store is at quadrant 4 and is on 1,-1 A. 2 B. 3 C. 4 D. 5 Is the answer B?

  2. English

    Combine these two simple sentences into one simple sentence with a compound verb. Jenny went to the grocery store. She bought chicken and potatoes. A. Jenny went to the grocery store; she bought chicken and potatoes. B. Jenny went

  3. Pre-Calculus

    Carmen rides her bicycle at a constant rate to the market. When she rides her bicycle back home along the same route, she bikes at three-quarters the rate she biked to the market. At any given time, t, the distance biked can be

  4. MATH

    6. It takes Pam 45 minutes to drive to work and 60 minutes to drive home from work. Write the ratio of the time Pam spends driving home from work to the time she spends driving to work in three different ways. 7. Ben needs to buy

  1. reading and write

    Grammar and Punctuation Unit Test 9 of 13 Items Item 9 Use the sentence to answer the question. Michael’s mom asked him to pick up a few things at the grocery for their taco dinner beans, cheese, and salsa. Where should a colon

  2. Business Math

    You are the manager of World Wide Athlete, a chain of six sporting goods shops in your area. The shops sell 12 racing bikes per week at a retail price of $679.99. Recently, you put the bikes on sale at $599.99. At the sale price,

  3. physics please help!!

    In the design of a supermarket, there are to be several ramps connecting different parts of the store. Customers will have to push grocery carts up the ramps and it is obviously desirable that this not be too difficult. The

  4. nutrition and wellness

    second writing assignment :) this time i wrote the whole thing, please check it for me: Pick a grocery store, and take notes on how the store is set up, and what factors you see affecting common food selections by the public. my

  1. 7th grade math help Ms. Sue please

    Hi! Sorry to keep bothering you with questions. Can you help me on 6 and 13 please? I cannot find the answers. Also, can you check my answers to 11 and 19? Thanks! 6. If point A is located at (0, –8) and B is located at

  2. Physics

    When the two 10 km/hr bikes (in the drawing below) are 20 km apart, a bee begins flying from one wheel to the other at a steady speed of 30 km/hr. When it gets to the wheel it abruptly turns around and flies back to touch the

  3. Math

    A grocery store sells 3 pounds of grapes for $3.45 another grocery store sells 5 pounds of grapes for $5.75 which equation represents the price of grapes

  4. English

    What sets off the main conflict in A&P Answers are Three girls in a bathing suit enter a grocery store A grocery store clerk is distracted from his work A store manager enforces the stores clothing policy Thanks Is it Three girls

You can view more similar questions or ask a new question.