Hi!
I would use system of equations to solve this.
Let r = calories per cup of raisins and s = calories per cups of sunflower seeds
I would set up the two equations as one being 2 cups of sunflowers + 3 cups of raisins = 2900 calories, and one cup of raisins + 400 calories = one cup of sunflower seeds. Those written out as equations are:
2s + 3r = 2900
r + 400 = s
Now, you can use substitution, substituting r + 400 into the first equation for s (as that equals s in the second equation) and you get:
2 (r + 400) + 3r = 2900
Now solve.
2r + 800 + 3r = 2900
5r = 2100
r = 420 calories
(For the check, for one cup of sunflower seeds, there are 820 calories, based off the fact raisins have 400 less calories than the sunflower seeds)
To check:
2 (820) + 3 (420) = 1640 + 1260 = 2900
420 + 400 = 820
So our answer of 420 calories is correct.
Hope this helped!
Part of one chromosome is exchanged with another.. so i’d say C possibly.
