math
posted by jessica on .
one serving(.5 cup) of cooked peas contains 45 more calories than one serving of cooked carrots and 50 more calories than one serving of green beans. If one serving og carrots and three servings of green beans contain the same number pf calories as one serving of peas, how many calories are there in one serving of peas?

let the calories in one serving of peas be x
then the calories in a serving of carrots is x45 and in one serving of beans is x50
one serving of carrots + 3 servings of beans = one serving of beans
x45 + 3(x50) = x
x45 + 3x  150 = x
3x = 195
x = 65
there are 65 calories in a serving of peas
check
peas = 65
carrots = 20
beans = 15
is 20 + 3(15) = 65 ?? YES