So substituting in numbers to see if they come near to the amounts
e.g.
if 1 rod is $30 times this b 5 and = $150
$243 - $150 = $93 divided by 2 = $46.50
Using this information then substitute into the other part of the question
6 rods x $30 = $180
8 reels x $46.50 = $372
372 + 180 = $552 too big
So start again
Choose 35
1 rod is 35 then 5 x 35 = 175
$243 - $175 = $68 divided by 2 = $34
Using this information then substitute into the other part of the question
6 rods x $35 = $210
8 reels x $34 = $272
210 + 272 = $482 too small
So choose number nearer to 30 so went for 31
31 x 5 = 155
243 - 155 = 88
88 divided by 2 = 44
So (2 x 44) + (5 x 31) = 243
So substituted in the numbers to part 2
31 x 6 rods = 186
44 x 8 = 352
186 + 352 = $538
So rods are $31
Reels are $44