Question: Jenna is buying concert tickets for her group of five friends. She's able to get two of the tickets from the concert website for $50 each before they sell out. A scalper offers to sell her two more tickets for 240% of the normal price, but Jenna convinces him to give her $10 off that total payment. Finally, one of her friends gets a discounted ticket through her job for 60% of the normal price. How much do Jenna's friends pay for their tickets in total?
Answer with step-by-step thinking: First calculate the price of the two normally priced tickets by multiplying the price and the quantity: $50 * 2 = $100. Then calculate the scalper's initial asking price by multiplying the normal cost of two tickets by 240%: $100 * 2.4 = $240. Then subtract the $10 discount Jenna negotiated: $240 - $10 = $230. Now calculate the price of the discounted ticket Jenna's friend gets through her job by multiplying the normal ticket price by 60%: $50 * .6 = $30. Finally, add up the price of all the tickets to find the total: $100 + $230 + $30 = $360.
So the answer is 360.


Question: In a store, an Uno Giant Family Card costs $12. When Ivan bought ten pieces, he was given a discount of $2 each. How much did Ivan pay in all?
Answer with step-by-step thinking: Instead of $12 each, an Uno Giant Family Card costs $12 - $2 = $10 each. Ivan paid $10 x 10 = $100 for the ten pieces Uno Giant Family Card.
So the answer is 100.


Question: The lifespan of a hamster is 6 years less than that of a bat. The lifespan of a frog is 4 times that of a hamster. Altogether, the lifespan of the animals is 30 years. What is the lifespan of the bat?
Answer with step-by-step thinking:
Let’s set up an equation by calling the lifespan of a bat x, and therefore the lifespan of the hamster x – 6, and the lifespan of the frog 4 (x – 6) which add together to equal 30, like this: x + x – 6 + 4 (x – 6) = 30. That gives us 6x – 30 = 30 and we should add 30 to each side to try to isolate the x. Now we have 6x = 60, which we will divide by 6, 6x / 6 = 60 / 6. This gives us x = 10. The bat has a lifespan of 10 years.
So the answer is 10.