Question

Answer this please I need some help

Answer 1

#18

• 3/8(100)=300/8=37%
• Total decrease=37+30=67%

Now

`\\ \rm\hookrightarrow 67\%\:of\:160`

`\\ \rm\hookrightarrow 0.67(160)`

`\\ \rm\hookrightarrow 107.2\£`

#19

Let amount be x

`\\ \rm\hookrightarrow 0.05x=150`

`\\ \rm\hookrightarrow x=150/0.05`

`\\ \rm\hookrightarrow x=3000mL=3\ell`

Answer 2

Question 18

» Money spent in a shop:

`{ \tt{ = (3)/(8) * 160}} \\ \\ = { \tt{60 \: euros}}`

» Money spent in another stuff:

`{ \tt{ = (30)/(100) * 160 }} \\ \\ = { \tt{48 \: euros}}`

» Therefore, total money spent is;

`{ \tt{ = (60 + 48) \: euros}} \\ { \tt{ = { \boxed{108 \: euros}}}}`

Question 19:

`{ \tt{ = (5)/(100) * 150 }} \\ \\ = \: { \boxed{ \tt{ \: 7.5 \: ml}}}`