book Maths Puzzle Numerical Ability

old Isaac Dropped from his perch on Ms. Cohen's window ledge 25 feet above ground. The equation h=16t + 25 gives Isaac's height above ground in feet as a function of time, t, in s

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Chrysler Sebring. After getting a 15% discount on the price of a new Chrysler Sebring convertible, Helen paid $27,000. What was the origin Harry has $4000 invested in 2 savings accounts. One account earns 6% interest per year, and the other pays 7% per year. If his total interest for the year is $264, how much is invested at 7%?---isnt it $167