GMAT Math : Problem-Solving Questions
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Example Questions
Example Question #101 : Problem Solving Questions
A store is offering a discount on clothing purchases made today. It is giving a 10% discount on purchases that total $50.00 to $99.99, a 20% discount on purchases totalling $100.00 to $199.99, and a 30% discount on purchases totaling $200.00 or more. The discount applies only to clothing items; no other items are discounted today.
Paris decides to purchase the following: Two bottles of perfume, one for $32 and one for $42; one handbag for $128; and one dress for $89. Disregarding tax, how much will she pay for these items?
The only item of clothing among Paris's items is the dress. It costs $89, so Paris will get a 10% discount - that is, she will pay 90% of the price, or
She will pay full price for the other items, so she will pay a total of
Example Question #102 : Word Problems
A hat is discounted 
Let 
Taking 
Analogously, adding 
Therefore, the amount paid is
To find 
Example Question #101 : Gmat Quantitative Reasoning
A bag is normally 
To calculate a 
Example Question #101 : Problem Solving Questions
A store is offering a discount on clothing purchases made today. It is giving a 
Bryan decides to purchase the following: Two pairs of jeans that cost 
The discount will apply to the jeans and the shirts, which, together, cost
Clothing purchases between 
Add to this the $18 cologne, which is not discounted:
Example Question #32 : Discount
A store is offering a discount on all purchases made today, except for clothing items. It is giving a 10% discount on purchases that total $50.00 to $99.99, a 20% discount on purchases totaling $100.00 to $199.99, and a 30% discount on purchases totaling $200.00 or more.
Harvey purchases three shirts that cost $49 each, a bottle of cologne that costs $19, and a watch that costs $69. Disregarding tax, what will Harvey pay for the items?
Harvey will receive a discount on the watch and the cologne; their prices total, before discount,
Since this purchase totals under $100, he will receive 10% off - that is, he will pay 90% of the original price, or
Add to this the price of the shirts, for which he will pay full price:
Example Question #1 : Interest Problems
Grandpa Jack wants to help pay for college for his grandson, Little Jack. Little Jack is currently 8 years old. Grandpa Jack makes a one-time deposit into an account that earns simple interest every year. Grandpa Jack invests $10,000 now and in ten years, that will grow to $15,000. What rate of simple interest did Grandpa Jack receive?
6%
5%
2%
3%
4%
5%
To calculate simple interest, the formula is
 "FV= PV (1+it)")
where 
Solving this we get
or 5%
ALTERNATE SOLUTION:
Another way of finding this is to calculate the amount of interest per year. Since this is simple interest, Grandpa Jack earns the same amount of interest per year. The total interest earned is 15,000-10,000= 5,000. $5,000 over 10 years, equates to $500 per year. $500 divided by the original $10,000 is .05, or 5%.
Example Question #2 : Interest Problems
How much interest would an investment yield if the principal of 
Example Question #1 : Interest Problems
What rate does Johnny need if he would like to yield 
Example Question #2 : Calculating Simple Interest
A bank offers a business a loan in the amount of $13,000 with a simple annual interest rate of 9%. How much will the business owe the bank after 3 years?
The accrual of simple interest can be found in two steps. First, multiply the principal amount by the interest rate. Second, multiply that result by the number of years during which interest will accrue.
The question asks for the total amount that the business will owe the bank, so we must add the interest accrued to the principal amount.
Example Question #1 : Interest Problems
John has 
Simple interest formula:
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