Use the table to write a proportion relating the weights on two planets. then find the missing weight. round to the nearest tenth.

We use this formula:

Weight on the second planet = × Table weight on the second planet

So,

Weight on Venus = × 109.2

                             = 3 x 27.3

                             = 81.9

Weight on earth =   × 120

                           = 144.7

Weight on Uranus =   × 96

                               = 110.2

Weight on Mercury =   × 45.6

                                = 48

a)

                 Venus: 81.9 pounds

b)

                  Earth: 144.7 pounds

c)

                   Uranus: 110.2 pounds

d)

                Mercury: 48 pounds.

It is given that: when earth weighs 120 pounds.

Then

weight of : Mercury=45.6 pounds

                  Venus= 109.2 pounds

                Uranus = 96 pounds

               Jupiter= 304.8 pounds

a)

If Earth weighs= 90 pounds

  when Earth weighs 120 pounds then weight of Venus= 109.2 pounds

If   Earth weighs 1 pounds then weight of Venus= 109.2/120

i.e.

If Earth weighs 90 pounds then weight of Venus= (109.2/120)×90

i.e.

If Earth weighs 90 pounds then weight of Venus= 81.9 pounds

b)

Mercury: 55 pounds

When Mercury weighs 45.6 pounds then weight of Earth=120 pounds

Hence,

when Mercury weighs 1 pounds then weight of Earth=120/45.6 pounds.

when Mercury weighs 55 pounds then weight of Earth=(120/45.6)×55 pounds.

when Mercury weighs 55 pounds then weight of Earth=144.7 pounds.

c)

Jupiter: 350 pounds

When Jupiter weighs 304.8 pounds then weight of Uranus=96 pounds.

when Jupiter weighs 1 pounds then weight of Uranus=96/304.8 pounds.

when Jupiter weighs 350 pounds then weight of Uranus=(96/304.8)×350 pounds.

when Jupiter weighs 350 pounds then weight of Uranus=110.2 pounds.

d)

Venus: 115 pounds

When Venus weighs 109.2 pounds then weight of Mercury=45.6 pounds.

when Venus weighs 1 pounds then weight of Mercury=45.6/109.2 pounds.

when Venus weighs 115 pounds then weight of Mercury=(45.6/109.2)×115 pounds.

when Venus weighs 115 pounds then weight of Mercury=48 pounds.

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy

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