Test Yourself: Are You Being Tricked by Intuition? http://t.co/IMLQYSXCd4 — Harvard Biz Review (@HarvardBiz) April 2, 2015

I got the third one 100% right. I messed up the second one and made a bad assumption in the first.

The first one still doesn't make any sense to me.

x = cost of ball cost of bat = x + 1 total cost = 1.10 = x + (x + 1) = 2x + 1 2x = 0.10 x = 0.05 So the ball cost 0.05, the bat costs 1 dollar more than the ball, 1.05, and the total is 1.05 + .05 = 1.10

1.10 = 2x + 1(subtract 1 from both sides of the equation)0.10 = 2x(divide both sides by 2)0.05 = x

# for 3!!Thanks for the coaching, boss, THIMK!!!

That was 3 for 3 ooops

Yes. Easy if one doesn't leap to any conclusions. Understand the question before the answer.

Woo apparently not, 3 out of 3!

I got the third one 100% right. I messed up the second one and made a bad assumption in the first.

ReplyDeleteThe first one still doesn't make any sense to me.

ReplyDeletex = cost of ball

ReplyDeletecost of bat = x + 1

total cost = 1.10 = x + (x + 1) = 2x + 1

2x = 0.10

x = 0.05

So the ball cost 0.05, the bat costs 1 dollar more than the ball, 1.05, and the total is 1.05 + .05 = 1.10

1.10 = 2x + 1

Delete(subtract 1 from both sides of the equation)

0.10 = 2x

(divide both sides by 2)

0.05 = x

# for 3!!

ReplyDeleteThanks for the coaching, boss, THIMK!!!

That was 3 for 3 ooops

ReplyDeleteYes. Easy if one doesn't leap to any conclusions. Understand the question before the answer.

ReplyDeleteWoo apparently not, 3 out of 3!

ReplyDelete