The astronomy club wants to buy five different sizes of eyepieces for a new telescope. The 6-, 12-, and 20-millimeter lenses cost $42.95 each, and the 32- and 40-millimeter lenses cost $57.96 each. Estimate the total cost of the lenses to the nearest whole dollar.
$345
$166
$245

Question

The astronomy club wants to buy five different sizes of eyepieces for a new telescope. The 6-, 12-, and 20-millimeter lenses cost $42.95 each, and the 32- and 40-millimeter lenses cost $57.96 each. Estimate the total cost of the lenses to the nearest whole dollar. 
       $345
       $166
       $245

anonymous · Answer

What seems to be the confusion?

There are 3 lenses that cost $42.95 each, so (42.92 * 3) = $128.85
There are 2 different lenses that cost $57.96 each (57.96 * 2) = $115.92

So add them together, that is your total, and round to nearest dollar.

128.85 + 115.92 = 244.77

The nearest whole dollar, is 245.

So the total cost would be $245 to the nearest dollar.

anonymous · Answer

im 7 but thank you very muich!!!!