Student at Gala wins Best Buy gift card

Student wins $110 from Host BDPA Chapter correctly answering ‘Bat and Ball‘ Algorithm Challenge a few Harvard Students get wrong…


The Question:

A bat and a ball costs $1.10. If the bat costs $1.00 more than the ball, how much does the ball cost?

The Algorithm:

price = $1.10
price = bat price + ball price
bat price = ball price + $1.00
price = ball price + (ball price + $1.00)

price = 2 x ball price + $1.00
1.10 = 2 * ball price + 1.00
(1.10 – 1.00)/2 = ball price
0.10/2 = ball price
0.05 = ball price

Verification and Validation (V&V)

price = bat price + ball price
$1.10 = $1.05 + $0.05

 The Correct Answer:    Ball Price = 5 ¢

National BDPA and local BDPA Chapters partner with Best Buy Children’s Foundation and The Geek Squad supporting technology inclusion initiatives in underserved communities, annual regional technology summits, the High School Computer Competition (HSCC), and national BDPA technology conferences.





Author: bdpatoday

BDPA, formerly known as Black Data Processing Associates, was founded in Philadelphia, Pennsylvania over 40 years ago in 1975 to promote professional growth and technical development in underserved communities for those in or entering information and communications technology (ICT) oriented fields of interest and related industries. bdpatoday (ISSN 1946-1429) is a monthly serial periodical published in Washington, D.C. by participating local BDPA Chapters of National BDPA (NBDPA) within their respective media markets by local chapter Communications Committees. bdpatoday is emailed to BDPA members, BDPA corporate sponsors, or electronically delivered to BDPA Chapters and Chapter Interest Groups (CIGs) via social media as a benefit of membership. Popular Technology TV (PTTV) features the latest TECH-Inclusion innovations and multimedia STEM programming content produced for video streams and television programs by Industry with bdpatoday and National BDPA's Washington, D.C. Chapter for general audiences.

Leave a Reply

%d bloggers like this: