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The oranges all weigh $130$ grams. The lemons are also all the same weight, which is less than $\frac{2}{3}$ of the weight of an orange.
There are twice as many lemons as oranges in the pile.
How many lemons are there and how much does each one weigh?
EWWNP means Exploring Wild and Wonderful Number Patterns Created by Yourself! Investigate what happens if we create number patterns using some simple rules.
Place four pebbles on the sand in the form of a square. Keep adding as few pebbles as necessary to double the area. How many extra pebbles are added each time?