Henry is buying school supplies for the start of th school year. For every 3 pencils he buys 2 pens . If Henry buys 21 pencils.h

Question

ruslelena [56]

2 years ago

12

Henry is buying school supplies for the start of th school year. For every 3 pencils he buys 2 pens . If Henry buys 21 pencils.h

ow many total pencils and pens did Henry purchase

Mathematics

2 answers:

Lilit [14] · Answer 1 · 2022-08-19T14:11:11+03:00

Lilit [14]2 years ago

7 0

Answer: He bought 7 pens.

Step-by-step explanation:

21/3 = 7

Tpy6a [65] · Answer 2 · 2022-08-19T15:26:28+03:00

Answer:

14

Step-by-step explanation:

So For every 3 pencils he buys, he buys 2 pens. The ratio is 3:2. You want to find another ratio that is 21:x, because he bought 21 pencils, but you don't know how many pens. You could also rewrite ratios into fractions so you would get 3/2 = 21/x. Move the variable and get 3/2x=21. So 3/2 multiplied by what is equal to 21? 3/2 multiplied by 14 is 21.