+0  
 
+1
282
2
avatar+589 

Mercedes rides her bike 10 miles in the first week. She increases the distance she rides by 2 miles each week.

How many miles will she ride over the course of 8 weeks?

jbouyer  Mar 1, 2018
Sort: 

2+0 Answers

 #1
avatar+12266 
+3

10 + 12 + 14 + 16 + 18 + 20 +22 + 24 =136 miles

ElectricPavlov  Mar 1, 2018
 #2
avatar
+2

Mercedes rides her bike 10 miles in the first week. She increases the distance she rides by 2 miles each week.

How many miles will she ride over the course of 8 weeks?

 

Sum them all up as an Arithmetic Series:

Sum =N/2 [2F + (N - 1)*D]

Sum =8/2 [2*10 + (8 - 1)*2]

Sum =4 [20 + (7*2)]

Sum =4 [20 + 14]

Sum =4 x 34

Sum = 136 miles - that Mercedes will ride over 8 weeks.

Guest Mar 1, 2018
edited by Guest  Mar 1, 2018

24 Online Users

New Privacy Policy (May 2018)
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  Privacy Policy