Question

The Martinez family has 5 children two of the children want to play the trumpet three of the children want to play the clarinet the table shows the cost of each type of instrument which is the most reasonable estimate for the total cost of the instruments for the Martinez family

Instrument Cost
Trumpet $299
Saxophone $349
Flute $129
Clarinet $104

Answer 1

So, 2 want to play trumpet, which is $598.
Also, 3 want to play clarinet, which is $312.
Adding those together is $910.
So the most reasonable estimate of total cost is $910 or $900, which 910 is rounded to the nearest ten, and $900 is rounded to the nearest hundred.

Answer 2

Step 1. Add about 2 trumpets. About $600
Step 2. Add about 3 clarinets. About $210
Step 4. Add them all together. About $810

Hope this helps! :)