2. The ratio of test tubes to beakers in a science laboratory is 7:4. If there are 21 test tubes, how many are beakers a, 12 b. 32 C. 22 d. 42 3. The ratio of nurses to doctors in a hospital is 9:2. If there are 120 doctors, how many are nurses a, 540 b. 380 c. 1089 d. 340 4. A car is travelling at a speed of 100 km/lh. How far can it travel in 5.25 hr? a 525 km b. 255 km C. 1050 km d. 515 km 5. Three buses can carry 135 passengers. How many passengers can five buses carry? a. 225 b. 215 C. 205 d. 235​

Sagot :

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2.) The ratio of test tubes to beakers in a science laboratory in 7 : 4, If there are 21 test tubes, how many are beakers?

[tex]\large\color{green}\boxed{→\:a\:12}[/tex]

[tex] \huge \color{fuchsia}{ \underline{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: }} [/tex]

Solution

[tex]\small\color{red}\boxed{21 ÷ 7 = 3}[/tex]

[tex]\small\color{red}\boxed{3 × 4 = 12}[/tex]

[tex]\small\color{red}\boxed{=\:12}[/tex]

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3.) The ratio of nurses to doctors in a hospital is 9 : 2. If there are 120 doctors, how many are nurses?

[tex]\large\color{green}\boxed{→\:a.\:540}[/tex]

[tex] \huge \color{fuchsia}{ \underline{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: }} [/tex]

Solution

[tex]\small\color{red}\boxed{120 ÷ 2 = 60}[/tex]

[tex]\small\color{red}\boxed{60 × 9 = 540}[/tex]

[tex]\small\color{red}\boxed{= 540}[/tex]

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4.) A car is traveling at a speed of 100 km/lh. How far can it travel in 5.25 hr?

[tex]\large\color{green}\boxed{→\:a.\:525\:km}[/tex]

[tex] \huge \color{fuchsia}{ \underline{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: }} [/tex]

Solution

[tex]\small\color{red}\boxed{100 × 5.25 = 525}[/tex]

[tex]\small\color{red}\boxed{= 525}[/tex]

[tex]••••••••••••••••••••••••••••••••••••••••[/tex]

5.) Three buses can carry 135 passengers. How many passengers can five buses carry?

[tex]\large\color{green}\boxed{→\:a.\:225}[/tex]

[tex] \huge \color{fuchsia}{ \underline{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: }} [/tex]

Solution

[tex]\small\color{red}\boxed{135 ÷ 3 = 45}[/tex]

[tex]\small\color{red}\boxed{45 × 5 = 225}[/tex]

[tex]\small\color{red}\boxed{= 225}[/tex]

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