Question

Marbles come in two sizes: 1-inch diameter and 2-inch diameter. The 1-inch diameter marbles cost 30 cents less than the 2-inch marbles. Rochelle buys 25 1-inch marbles for her science project and spends exactly $10. Find the cost of a 2-inch marble. Responses. Explain how??????????? but make it really short and the answer is 0.17

Answer 1

[AI-generated answer — Bot GPT 3.5]

Let x = cost of 2-inch marble

Cost of 1-inch marble = x - 0.30

25(1-inch marbles) + 0(2-inch marbles) = $10
25(x - 0.30) = $10
25x - 7.50 = $10
25x = $17.50
x = $0.70

Cost of 2-inch marble = $0.70
0.70 = 0.17