Away for a while, but don't be too happy i'm BACK! :O

Hi all, yours truly has been away on MC these days due to a bad throat, so tuition lessons are cancelled! :( ya lah ya lah,Mr Fong miss you so much ok... :D don't miss Mr Fong too, for he might scold you still if you never do homework! :D

Don't worry, the princess has very lovingly planted a kiss on the prince Mr Fong's voice and now it has turned from a croaking, froggy voice to a beautifully rich and musical voice!
*groans heard throughout the classroom*

Update:
Many people are concerned with what Mr Fong likes to eat that makes him so svelte,haha! Today commemorates the end of the bad throat, so with his voice rejuvenated, he would like people to voice out opinions on his diet after he just recovered.

1) Chocolate sticks
2) Chocolate cake
3) Mouth-watering Krispy Kreme Doughnuts!
4) Skittles
5) Curry chicken for lunch; and
6) Fried rice garnished with savoury, succulent pieces of salted fish...

Don't be surprised if Mr Fong takes another long MC break again ah!

As usual, Mr Fong is in the mood to do some online teaching, very much due to the delectable food that he connoiseured, which are now stopping him from continuing with his students the quest for A*! So let's suffer with him now...

The Supposition Method
*clears throat*
1. There is a total of 56 books and pens. Each book cost $8 and each pen cost $6. Their total cost is $370. How many books and how many pens are there?

Ahh,good luck now, the aim is to do it without trial and error! :D

Enjoy! As a very naggy tutor, Mr Fong hopes you can still try the other older questions in the comments section to reassure him more,hehehehe...