Answer: 80 coins
Step-by-step explanation: To determine how many coins Kareem has, we need to determine the percentage of pennies in the jar. We're given that 30% of the coins are pennies, and we know there are 24 pennies in the jar.
To find the total number of coins, we can set up a proportion:
30/100 = 24/x
To solve for x, the total number of coins, we can cross-multiply and solve for x:
30x = 100 * 24
30x = 2400
x = 2400/30
x = 80
Therefore, Kareem has a total of 80 coins in the jar.
I hope this helps!