Diana spent a total of 240 minutes

[ska7945]

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.

ans C

[Suyog]

using (I) & (II)

(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.

say she spent 100 min responding to E-mails.
so, mins spent attending the training class is 90 percent, so 90 mins

100 + 90 = 190....
mins remaining
240 - 190 = 50 (Talking on the phone)

(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.

As per (II) we have to check if "time spent attending the training class is 60 percent of total amount of time that she spent responding to E-mails and talking on the phone?"

90 mins is 60% of 150?
Yes it is!

Choose(c)