R1 Ratios Introduction practice
 Ratios are a comparison.  They may be written as afraction, with colons, or using the word to.  See examples below.3/43:43 to 4.Ratios need to be simplified.  Rates are ratios thatcompare unlike units like dollars per hour or milesper gallon.  Simplify.18 boys12 boysdivide by 6divide by 6 12 white rosesSimplify.30 roses   Simplify.9 hours3 people  Simplify.3 gallons45 miles Find the unit rate.  (How much for one.)3 hours\$60\$1 hour Find the unit rate.  (How much for one.)3 flowers\$7.50\$1  flower Find the unit rate.  (How much for one.)10 hours\$80\$1 hour Find the unit rate.  (How much for one.)3 gallons45 miles1 gallongallon Solve the following proportions.8 songs1 cdx by 6x by 66 cd'ssongs Solve the following proportions.3 ticketsCross multiply \$60 x 5 then divide by 3.\$60\$5 tickets Solve the following proportions.2 hours\$60\$150hours Solve the following proportions.     2.5     815 A 4 liter bottle of laundry detergent costs \$7.99.  A 6.5 liter bottle of laundry detergent costs \$16.99.   Which one is the better buy?To compare find out how much one liter of each costs.4 liters fpr \$7.996.5 liters for \$16.99 A 2.2 lb. package of chicken  costs \$5.99.  A 5.1 lb. package of chicken costs \$9.95.  Which one is the better buy?To compare find out how much does one pound of eachcost.2.2 lb. for \$5.995.1 lb. of \$9.95 Aryana made 12 pairs of earrings in 2 hours.  How manypairs of earrings could she make in 3 hours?How many pairs of earrings can she make in 3 hours?How many pairs of earrings can she make in one hour?pairspairs
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