Problem Solving (PS) | Re: Mona and Donald fly to Rome for the weekend. They take cash only in

• Let the no. of\(€10\) notes with Donald be\( =x\)
• Then no. of\(€10\) notes with Mona will be\( =3x\)

• Let the no. of\($10\) notes with Donald be\( =y\)
• Then no. of\($10\) notes with Mona will be\( =y\)

• According to the question, no. of\(€10\) notes they take is double the no. of\($10\) notes
• Or\( 3x+x=2\times(y+y)⇒4x=4y⇒x=y\)

• According to the question, Donald carries a total of 40 notes orx+y=40
  \(⇒x+x=40\) (because\(x=y\))
• ⇒x=y=20

• Finally. total number of notes they take\(=x+3x+y+y\)
  \(=4x+2y\)
  \( =4\times 20+2\times20\)
  \(=120\)

Statistics : Posted by SaquibHGMATWhiz • on 22 Sep 2023, 01:30 • Replies 2 • Views 210