smc-3147-10-Calculate %

Number, NAP-H3-CA10v1

A lost and found box contains 5 shirts, 12 caps and 4 pairs of shorts.

About what percentage of the items in the lost and found box are shirts?

`5text(%)`	`18text(%)`	`24text(%)`	`75text(%)`

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`24text(%)`

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`text(Percentage of shirts)`

`=5/(5 + 12+4)`

`=5/21`

`=24text{% (nearest %)}`

Max wanted to buy a squash racquet that cost $75.

He has saved $60.

How much extra does he need to save as a percentage of the cost price?

`text(7.5%)`	`text(20%)`	`text(25%)`	`text(75%)`

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`text(20%)`

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Albert has 50 marbles in his bag.

He records the colour of each marble in the table below.

What percentage of the marbles are white?

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`text(28%)`

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`text(Number of white marbles)`

`= 50 – (20 + 12 + 4)`

`= 14`

`:. % text(white)`	`= 14/50 xx 100`
	`= 28 text(%)`

There were only 17 students in Grace's class on Wednesday. The other 8 were absent.

What percentage of Grace's class was absent?

`text(8%)`	`text(25%)`	`text(32%)`	`text(33%)`

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`32text(%)`

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`text(Total in class)`	`= 17 + 8`
	`= 25`

`:.\ text(Percentage absent)`

`= 8/25 xx 100`

`= 32text(%)`