In how many years will a sum of £1200 amount
to £1323 at the compound interest rate of 5%p. a

2 years

Step-by-step explanation:

1323=1200(1+5/100)^n

(1323/1200)=(105/100)^n

(441/400)=(21/20)^n

(21/20)^2=(21/20)^n

NOY=2

hello :

70y^8 + 30y^6 = 2 ( 35 y^8 + 15y^6)

the lenght is : 35 y^8

the width is : 15y^6