Question

The heaviest land animal ever recorded (according to the Guinness Book of World Records) was a male African bush elephant. He weight 13.5 tons measured to the nearest half-Ton how would you find the elephants minimum and maximum possible weights ? A) subtract and add 0.5 ton from 13.5 tons B) subtract and add 0.75 ton from 13.5 tons. C) subtract and add 1 Ton from 13.5 tons.D) subtract and add 0.25 ton from 13.5 tons

Answer 1

"13.5 measured to the nearest half-ton"

this means that the weight, after rounding to the nearest 0.5 tons, must be equal to 13.5. so we have to work backwards and see what possible range of values rounds up or down to 13.5.

go through the answer choices, apply the operation stated, and see whether the minimum and maximum values still round to 13.5.

remember, you're rounding to the nearest 0.5.