Asked by bobby
Dudley has a number of 10c and 20c coins. If their total is $6, how many are there of each coin if there are:
a) equal numbers of each coin?
b) twice as many 10c coins as 20c coins
a) equal numbers of each coin?
b) twice as many 10c coins as 20c coins
Answers
Answered by
oobleck
(a) 10x + 20x = 600
(b) 10*2x + 20x = 600
in each case, solve for x and in (b) find 2x
(b) 10*2x + 20x = 600
in each case, solve for x and in (b) find 2x
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