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7 February, 14:27

The number of bocks has 9 in the ones place. The number in the hundreds place is one more then the tens place. Those two numbers equal 11. How many block are there?

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  1. 7 February, 17:03
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    There are 659 blocks

    Solution:

    The number in ones place is 9

    Let's denote number in the tens place with x

    The number in the hundreds place is one more then the tens place

    Therefore,

    The number in hundreds place is 1 + x

    Those two numbers equal 11

    Which means tens place number and hundreds place number sums up to 11

    tens place + hundreds place = 11

    x + 1 + x = 11

    2x = 11 - 1

    2x = 10

    x = 5

    Thus number in tens place = x = 5

    Number in hundreds place = 1 + x = 1 + 5 = 6

    The number is represented as:

    Number = (Number in hundreds place) (number in tens place) (number in ones place)

    Number = 659

    Thus 659 blocks are there
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