The Choi family and the Howard family each used their sprinklers last summer the Choi family sprinkler was used for 30 hours the Howard family sprinkler was used for 40 hours there was a combined total output of 1700 L of water what was the water output rate for each sprinkler if the sum of the two rates was 50 L per hour ?

The skating rink rented 872 pairs of skates during april and may.why? : if the skating rink rented three times the pair of skates in april during may, they rented 654 skates. 218 x 3 = 654then, if they want to know how many they rented during both april and may, then you just add 654 (may) and 218 (april) to give you 872 pairs of skates for both months.654 + 218 = 872hope this !