Nisha wants to study 5 hours for the spelling bee. If she studies 1__3hour per night, how many nights will she have to study?

15 Nights

Explanation:

Given that,

Time Nisha spends for preparing spelling bee = 5 hours

Time spent per night = 1/3 hour per night

So, the total time she needs to study would be 3/3

If one night = 1/3

∵ 3/3 = 3 nights

If she needs to study five hours, the nights she would take

= 3 * 5

= 15nights

600 grams is the answer

and your question what topic are you in trouble with?