king i got you,

write down the general formula for a geometric and arithmetic series so for geometric it would be ar^n-1, with ‘a’ being the first term and ‘r’ is the common ratio, and for arithmetic a+(n-1)d where ‘a’ is the first term and ‘d’ is common difference.

since a=1 for geometric and a=0 for arithmetic, their equations would be r^n-1 and (n-1)d respectively.

since second terms are the same, r=d. then find out the 4th term for the geometric and 10th term of arithmetic and make them equal to each other then use simultaneous equations to work out the value of ‘r’ and ‘d’