A medium orange has 70 calories. This is 10 calories less then 1/4 of the calories in a sugar krunch

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A medium orange has 70 calories. This is 10 calories less then 1/4 of the calories in a sugar krunchy. How many calories are in a sugar crunchy?

Let s = calories in a sugar crunch. Let o = 70 be the calories in a medium orange. Set up the equation:
o = 1/4s - 10
70 = 1/4s - 10

Add 10 to each side
1/4s = 80

Multiply each side by 4
s = 320