Here you go!
I have looked through your workings below and realise you are unable to form the 2 simultaneous equations because you didnt realise that Toby and Sheryl age are not the same 5 years ago, 5 years later and presently. 😦
Its ok. Do a few more of these practice questions and I am sure you will get the drift. 🙂
Please attempt the question again after watching the video and also another similar question that i have send to you via watsapp.
Do submit these 2 questions to me this Thurs. 🙂