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{
"id": "prob_001",
"text": "Sarah has 15 apples. She gives 4 apples to her friend and buys 7 more. How many apples does Sarah have now?",
"type": "arithmetic_multi_step",
"difficulty": "easy",
"expected_answer": "18"
},
{
"id": "prob_002",
"text": "A train travels at 60 miles per hour for 2.5 hours. How far does it travel?",
"type": "rate_distance_time",
"difficulty": "easy",
"expected_answer": "150 miles"
},
{
"id": "prob_003",
"text": "A rectangle has a length of 12 cm and a width of 8 cm. What is its area?",
"type": "geometry_area",
"difficulty": "easy",
"expected_answer": "96 cm²"
},
{
"id": "prob_004",
"text": "John is twice as old as Mary. In 5 years, John will be 25. How old is Mary now?",
"type": "algebra_age",
"difficulty": "medium",
"expected_answer": "10"
},
{
"id": "prob_005",
"text": "A store sells pencils for $0.50 each and pens for $1.20 each. If Lisa buys 8 pencils and 5 pens, how much does she spend?",
"type": "arithmetic_money",
"difficulty": "easy",
"expected_answer": "$10.00"
},
{
"id": "prob_006",
"text": "The sum of three consecutive integers is 72. What are the three integers?",
"type": "algebra_consecutive",
"difficulty": "medium",
"expected_answer": "23, 24, 25"
},
{
"id": "prob_007",
"text": "A car uses 5 gallons of gas to travel 150 miles. How many gallons are needed to travel 360 miles?",
"type": "proportion_rate",
"difficulty": "medium",
"expected_answer": "12 gallons"
},
{
"id": "prob_008",
"text": "A right triangle has legs of 9 cm and 12 cm. What is the length of the hypotenuse?",
"type": "geometry_pythagorean",
"difficulty": "medium",
"expected_answer": "15 cm"
},
{
"id": "prob_009",
"text": "A pizza is cut into 8 equal slices. If 3 people each eat 2 slices, what fraction of the pizza is left?",
"type": "fractions",
"difficulty": "easy",
"expected_answer": "1/4"
},
{
"id": "prob_010",
"text": "Compound interest: $1000 invested at 5% annual interest compounded yearly. How much after 3 years?",
"type": "compound_interest",
"difficulty": "hard",
"expected_answer": "$1157.63"
},
{
"id": "prob_011",
"text": "A farmer has chickens and cows. There are 30 heads and 86 legs total. How many chickens and how many cows?",
"type": "system_of_equations",
"difficulty": "hard",
"expected_answer": "17 chickens, 13 cows"
},
{
"id": "prob_012",
"text": "A pool can be filled by pipe A in 4 hours and pipe B in 6 hours. If both pipes are open, how long to fill the pool?",
"type": "work_rate",
"difficulty": "hard",
"expected_answer": "2.4 hours"
}
] |