Question

The below given table gives the number of tickets sold in a play on different days of the week.
$$\begin{array}{cc}\text{Day}& \text{Number of tickets sold}\\ \text{Monday}& 625\\ \text{Tuesday}& 597\\ \text{Wednesday}& 210\\ \text{Thursday}& 423\end{array}$$
On which two days, does the sum of number of tickets sold cross 1100?

• A. Monday and Tuesday
• B. Monday and Wednesday
• C. Tuesday and Wednesday
• D. Monday and Thursday

Answer 1

The correct option is A Monday and Tuesday

The sum of number of tickets sold on Monday and Tuesday is $625+597,$ which can be best estimated by the sum $600+600=1200,$ which is greater than 1100.

But, the sum total of tickets sold on Monday and Wednesday is $625+210,$ which is best estimated by $600+200=800,$ which is less than 1100.

Similarly, the sum of tickets sold on Tuesday and Wednesday is $597+210,$ best estimated by $600+200=800,$ which is less than 1100.

Lastly, the sum $625+423$ is best estimated by $600+400=1000,$ which is also less than 1100.