Answer:
7 quarters are spent for throwing 350 food pebbles in pond.
Explanation:
Given:
Reggie receives 50 food pebbles for every quarter he spends.
Number of food pebbles he has = 350
Let the number of quarters spent for 350 pebbles be 'x'.
Now, using proportion and cross multiplication method, we can find 'x'.
1 quarter is equivalent to 50 pebbles thrown in pond.
So, 'x' quarters is equivalent to 350 pebbles thrown in pond.
So, 7 quarters are spent for throwing 350 food pebbles in pond.