vksunder wrote:

Yesterday Diana spent a total of 240 minutes attending a training class, responding to E-mails, and talking on the phone. If she did no two of these three activities at the same time, how much time did she spend talking on the phone?

(1) Yesterday the amount of time that Diana spent attending the training class was 90 percent of the amount of time that she spent responding to E-mails.

(2) Yesterday the amount of time that Diana spent attending the training class was 60 percent of the total amount of time that she spent responding to E-mails and talking on the phone.

at+re+tp=240

tp=?

1) at=90/100 * re => this does not solve for tp

2)at=60/100 * (re+tp) => does not solve for tp

combine both we can solve in terms of tp and find tp

_________________

cheers

Its Now Or Never