Question

7. The following table shows the travelling time (t hours) and the distance covered (y km) by a
Travelling Time (t hour)
0.5
Distance Covered (4 km)
30
60
180
2.5
1.0
1.5
2.0
90
120
150
that varies directly as t.
(b) Write the equation connecting t and y.
1
125​

Answer 1

Answer:

120 km ievrobwjwossg2ge

Answer 2

Answer:

The linked picture is the complete question which is divided n the parts-

Explanation:

a) t and Y are in direct proportion as

y/t $=\frac{30}{0.5} = \frac{60}{1.0} = \frac{90}{1.5}= .........=60$

As shown in the above series more the time increase more distance would be covered by the car the proportion increase by every thirty mins $30$ km is covered.

b) As deduced above the proportion of speed is equal to $60$km/hr

So when $t=1.25$, $\frac{y}{t} =\frac{y}{1,25} = 60$

$y=60*1.25=75km/hr$

c) Similarly when, $y=72$

$\frac{y}{t} = \frac{72}{t} = 60$

$t=1.2$

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