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.
2 answers
The cost of a 2-inch marble is $1.30.
Wrong again!!!
The answer doesn't even sound logical
cost of 1-inch marble --- x
she buys 25 of those for $10
cost of each 1-inch marble = 10/25 = .4
so each costs 40 cents.
since the 2-incher costs 30 cents more, it must cost 70 cents each
The answer doesn't even sound logical
cost of 1-inch marble --- x
she buys 25 of those for $10
cost of each 1-inch marble = 10/25 = .4
so each costs 40 cents.
since the 2-incher costs 30 cents more, it must cost 70 cents each
1 answer