Peter spent half the money on his gift card on coffee. he loaded another $10 onto the gift card. how much was on the gift card to begin with if he now has at least $40 on the card?

$60 was the orginal amount on the gift card.

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have