R S Aggarwal Solutions for Chapter: Ratio, Proportion and Unitary Method, Exercise 5: TEST PAPER-10

The ratio of zinc and copper in an alloy is $7:9$. If the weight of copper in the alloy is $12.6 \mathrm{kg}$, find the weight of zinc in it.

If $36:81::x:63$, then $x=$ _____.

If $25, 35, x$are in proportion, then $x=$ _____.

If $9, x, x, 49$ are in proportion, then $x=$ _____.

$30, 40, 45, 60$ are in proportion.

$6:8$ and $9:12$ are equivalent ratios of $3:4$.

A dozen : A score $=5:3$.

$60 \mathrm{p}:₹3=1:5$