The money in mother’s pocket can buy 4 kilograms of oranges and 5 kilograms of pears; or buy 2 kilograms of oranges and 8 kilograms of pears; if the money is used to buy all pears, how many kilograms can be bought in total?
妈妈口袋里的钱可以买4千克橘子和5千克梨；或者买2千克橘子和8千克梨；若改用这些钱全部买梨，一共可以买多少千克．
<gadget id="calculator">3 + 8</gadget>
<output>11</output>

<result>11</result>