Q- If I was an athletic shoe manufacturer, how could I increase sales 40%? In terms of elasticity? (That’s all the info I have)

Practice Problem I have this practice problem. I just cannot figure it out. Having trouble differtiating elastic, inelastic and unitary demand. In an effort to increase revenue for the insurance industry, all insurance companies increased prices by 20 percent. To its dismay, only a 10% increase in revenue was received instead of the 20% increase that was expected. What does this say about the elasticity demand for insurance products? What were the insurance companies assuming the elasticity de