Math help 10 questions? SAT question!?

When Suraj goes to Roycefield golf course, he loses 20 percent of the (golf) balls he uses. When he goes to Hunterdon golf course, he loses 30 percent of the balls he uses. It costs Suraj $1.20 to buy a ball. This weekend, Suraj is planning to use 25 balls at Roycefield and 30 balls at Hunterdon, If he only has $20 to spend on balls, how many balls can he buy in order to guarantee that he will be able to replace the balls he loses this weekend?

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  • ?
    Lv 7
    6 months ago
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    When Suraj goes to Roycefield golf course, he loses 20 percent of the (golf) balls he uses.

    When he goes to Hunterdon golf course, he loses 30 percent of the balls he uses

    Suraj will need to replace 5+9 = 14 balls @ $1.20 each

    With $20, he can buy

    ...............$20

    ..........-------------- = 16.66 or 16 balls..............ANS

    ..........$1.20/ball

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  • 6 months ago

    At Royce he will loose 25 * 0.20 = 5 golf balls

    At Hunter he will loose 30 * 0.30 = 9 golf balls

    The sum is 14. 14 * $1.20 = $16.80. So se has enough money to replace the balls he might use.

    The question though is " how many balls can he buy" rather "than how many balls should he buy". He can buy 20/1.20 = 16.6 or 16 golf balls.

    You will have to look at the answer sheet to determine what the question is.

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  • 6 months ago

    At R, 25 x 0.2 = 5 balls lost

    at H, 30 x 0.3 = 9 balls lost

    assuming he has the 55 balls to start with....

    so he has to buy 14 balls for replacement, which is 14 x $1.20 = $16.80

    so he can buy 14 balls at $16.80

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