Solution

158702

Problem / game
Birthday cake Candles Back to problem
First name
Olivia
Country
Australia
Age
10
Filename
lGJEEc-IMG_1192.jpg

Firstly I wrote out all the numbers up to eleven. Then I found the middle number and the end number. After that you times the numbers together. Then you have all the numbers that you wrote down added together. If the candles can last 11 or more years then Ben's parents only have to buy 11 candles up to Ben's 11th birthday.