Mathematics: Jack broke apart 5 times 216 as (5 times 200) + (5 times 16) to multiply mentally. what strategy did he use?

Jack broke apart 5 times 216 as (5 times 200) + - id5216520052423820, googoomylizard

dilaydi1212

02.03.2020

Robin's gross pay=$50,400

Step-by-step explanation:

We are given that Robin has 15% of his gross pay directly into his mutual fund account each month.

If Robin deposited each month =$630

We have to find the gross pay

Let Robin's gross pay =x

15 % of gross pay= 15% of x= $\frac{15}{100}\times x=\frac{15}{100}x$

We know that 12 month in a year

$\frac{15}{100}x=630\times 12$

$15x=630\times 100\times 12$

Using multiplication property of equality

$x=\frac{756000}{15}$

Using division property of equality

x=50400

Hence, Robin's gross pay=$50,400

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