Kim, Beth, and Jenny gave money to buy their mother a birthday gift.
The gift cost $40.
Kim gave 35% of the money for the gift.
Beth gave 3/8 of the money for the gift.
How much money did Jenny give to buy the gift?
If Jenny gave x dollars, then we have
.35*40 + (3/8)*40 + x = 40
14 + 15 + x = 40
x = 11
With word problems, just start writing the facts in symbols. You will end up with equation(s) to solve.
To find out how much money Jenny gave to buy the gift, we need to calculate the sum of the money Kim and Beth gave and subtract it from the total cost of the gift.
Step 1: Calculate the amount Kim gave:
Kim gave 35% of the total cost. To find this, multiply the total cost by 35% (or 0.35):
Amount Kim gave = 0.35 * $40 = $14
Step 2: Calculate the amount Beth gave:
Beth gave 3/8 of the total cost, so we need to find 3/8 of $40:
Amount Beth gave = (3/8) * $40 = $15
Step 3: Add Kim and Beth's contributions to find the total amount they gave:
Total amount Kim and Beth gave = $14 + $15 = $29
Step 4: Subtract the total amount Kim and Beth gave from the total cost of the gift to find out the amount Jenny gave:
Amount Jenny gave = Total cost - Total amount Kim and Beth gave
Amount Jenny gave = $40 - $29 = $11
Therefore, Jenny gave $11 to buy the gift.