Question

a pineapple is 7 times as heavy as an orange. the pineapple also weight 870 grams more than orange what is the total weight in grams for the pineapple and orange

Answer 1

You would solve it by setting up a system of equations. P=7o and P=o+870. In the second equation, replace P with 7o and solve for o. 7o=o+870 6o=870 o=145 Plug 145 into p=7o P=1015

Answer 2

An orange ... o grams = ?
a pineapple ... p = 7 * o
                        p = 870 grams + o

If you would like to know what is the total weight in grams for the pineapple and orange, you can calculate this using the following steps:

7 * o = 870 + o
7 * o - o = 870
6 * o = 870      /6
o = 870 / 6
o = 145 grams

p = 7 * o = 7 * 145 grams = 1015 grams

Result: A pineapple weights 1015 grams and an orange 145 grams.