Q3 of 54 Page 162

If truck covers a distance of 510 km in 34 litres of diesel. How much distance would it cover in 20 litres of diesel?

Distance covered by truck increases, diesel required also increases. So it is a direct proportion.


Let required distance be x km,


⇒ 34 × x = 510 × 20


⇒ x = = 300 km


More from this chapter

All 54 →
1

Observe the tables given below and in each one find whether x and y are proportional:

(i)




















x



3



5



8



11



26



y



9



15



24



33



78



(ii)




















x



2.5



4



7.5



10



14



y



10



16



30



40



42



(iii)






















x



5



7



9



15



18



25



y



15



21



27



60



72



75


 2

If x and y are directly proportional, find the value of x1, x2 and y2 in the table given below:

















X



3



x1,



x2



10



Y



72



120



192



y2


 4

A taxi charges a fare of Rs.2550 for journey of 150 km. How much would it charge for a journey of 124 km?

 5

A loaded truck covers 16 km in 25 minutes. At the same speed, how far can it travel in 5 hours?