you have a bag with 20 quarters, 10 dimes, 30 nickels and 15 pennies. If you reach into the bag and randomly draw out a coin what is the probability that its not a dime?

Question

anonymous · Answer

Please help me!!!

anonymous · Answer

@ganeshie8

ganeshie8 · Answer

Two questions :
how many coins are there in total ?
how many coins are NOT dimes ?

anonymous · Answer

there are 75 coins total and 65 coins are not dimes

ganeshie8 · Answer

yes ! 

probability for "$\large    \text{not dime}$" =    $\large \dfrac{ \text{ # of not dimes} }{ \text{total #}}$

ganeshie8 · Answer

just take the ratio

anonymous · Answer

But what would the exact percent be?

paki · Answer

65/75 = 13/15

ganeshie8 · Answer

probability is always between 0 and 1
to get the percentage multiply the ratio by 100