Weight of an grapefruit=weight of an orange+8% weight of an orange weight of an apple=weight of an orange -10% weight of an orange
a.<span>By what percentage is the grapefruit heavier than the apple? We should find the connection between grapefruit and an apple. We know the connection between the weight of a grapefruit and an orange, we know the connection between an orange and an apple, so this means we know the connection between a grapefruit and an apple. </span> weight of an grapefruit=weight of an <span>orange+8% weight of an orange </span>weight of an orange=weight of an apple<span> +10% weight of an apple </span> -> weight of an grapefruit=weight of an apple+10% weight of an apple + 8%(weight of an apple+10% weight of an apple)= weight of an apple + 18% weight of an apple + 2% weight of an apple= <span>weight of an apple + 20% weight of an apple
</span><span>b.By what percentage is the apple lighter than the grapefruit? </span>weight of an grapefruit=weight of an apple + 20% weight of an apple<span> </span> -> The apple ts 20% lighter than the grapefruit.
