Question

David took a walk around a park twice. He took David took a walk around a park twice. He took 12.4 minutes for the first round. In the second round, it took him 3.2 fewer minutes than he did the first round. How long did David complete his walk altogether? what 12.4 minutes for the first round. In the second round, it took him 3.2 fewer minutes than he did the first round. How long did David complete his walk altogether?
(what is asked?)

Answer 1

Question

David took a walk around a park twice. He took 12.4 minutes for the first round. In the second round, it took him 3.2 fewer minutes than he did the first round. How long did David complete his walk altogether?

Answer

21.6 minutes

Solution

David took 12.4 minutes for the first round while 3.2 fewer minutes than he did the first round means he took (12.4 - 3.2) minutes = 9.2 minutes to complete second round. We are asked to calculate total time taken by David to complete his walk around a park twice.

Time taken for Round 1 ↝ 12.4 minutes.

Time taken for Round 2 ↝ 9.2 minutes.

Thus ,

$\sf Total \: time \: taken \: by \: David = Round_1 + Round_2$

↝Total time taken = (12.4 + 9.2) = 21.6 minutes.

$\underline{\rule{190pt}{2pt}}$

Precaution

It was just a simple word problem based on addition, the only precaution is to be taken in $\sf Round_2$ it is given that 3.2 minutes fewer and not 3.2 minute so it must be 9.2 minutes suggesting that he has completed his second round much faster.

Thankyou