A histogram shows time spent on homework (minutes): $0$-$30$: $4$, $30$-$60$: $11$, $60$-$90$: $9$, $90$-$120$: $6$. How many students spend at least $60$ minutes?

Question

Aicharya · Accepted Answer

At least $60$ minutes $=$ classes $60$-$90$ and $90$-$120$ $= 9+6 = 15$.

A histogram shows time spent on homework (minutes): $0$-$30$: $4$, $30$-$60$: $11$, $60$-$90$: $9$,…

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