Huw is paid a weekly wage. Every week he: saves

1
/
5

of his wage,

spends 70% of the money he has left on his living expenses,

spends all that remains on his social life.

One week, Huw saves £40.

How much does Huw spend on his social life?

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *