Question

Jason runs around a 400-meter track for training. During the month of September he ran around the track 520 times. How many kilometers did he run in September? A certain antacid tablet contains 500 mg of calcium carbonate. If the doctor warns Jill not to take over 8 g per 24-hour period, how many tablets can she take in a day?

Answer 1

208 km

16 tablets per day

Explanation:

Given:

Length of training track run by Jason = 400 m

Number of times Jason ran on the track = 520

Therefore,

The total length covered by Jason = 520 × 400 = 208,000 m

now,

1 Km = 1000 m

thus,

208,000 m =
`\frac{\textup{208000}}{\textup{1000}}`

or

= 208 km

b) Amount of calcium carbonate in a tablet = 500 mg = 0.5 g

Maximum amount of calcium carbonate that can be taken = 8 g

hence,

the maximum number of tablets that she can take

=
`\frac{\textup{Maximum amount of calcium carbonate that can be taken}}{\textup{Amount of calcium carbonate in a tablet}}`

=
`\frac{\textup{8}}{\textup{0.5}}`

= 16 tablets per day